diff --git a/src/Forms/VobSubOcr.Designer.cs b/src/Forms/VobSubOcr.Designer.cs
index aab151134..5ace14ebf 100644
--- a/src/Forms/VobSubOcr.Designer.cs
+++ b/src/Forms/VobSubOcr.Designer.cs
@@ -255,8 +255,6 @@ namespace Nikse.SubtitleEdit.Forms
             // checkBoxUseModiInTesseractForUnknownWords
             // 
             this.checkBoxUseModiInTesseractForUnknownWords.AutoSize = true;
-            this.checkBoxUseModiInTesseractForUnknownWords.Checked = true;
-            this.checkBoxUseModiInTesseractForUnknownWords.CheckState = System.Windows.Forms.CheckState.Checked;
             this.checkBoxUseModiInTesseractForUnknownWords.Location = new System.Drawing.Point(22, 74);
             this.checkBoxUseModiInTesseractForUnknownWords.Name = "checkBoxUseModiInTesseractForUnknownWords";
             this.checkBoxUseModiInTesseractForUnknownWords.Size = new System.Drawing.Size(165, 17);
diff --git a/src/Forms/VobSubOcr.cs b/src/Forms/VobSubOcr.cs
index d669539f7..de513e643 100644
--- a/src/Forms/VobSubOcr.cs
+++ b/src/Forms/VobSubOcr.cs
@@ -996,12 +996,20 @@ namespace Nikse.SubtitleEdit.Forms
                         i++;
                     }
                 }
+                comboBoxModiLanguage.SelectedIndex = -1;
             }
 
             var sb = new StringBuilder();
             int badWords = 0;
             var textWithOutFixes = new StringBuilder();
             textWithOutFixes.Append(Tesseract3DoOcrViaExe(bitmap, _languageId));
+
+            if (textWithOutFixes.ToString().Trim().Length == 0)
+            {
+                textWithOutFixes = new StringBuilder();
+                textWithOutFixes.Append(TesseractResizeAndRetry(bitmap));     
+            }
+
             sb.Append(textWithOutFixes.ToString());
             int numberOfWords = sb.ToString().Split((" " + Environment.NewLine).ToCharArray(), StringSplitOptions.RemoveEmptyEntries).Length;
 
@@ -1012,6 +1020,22 @@ namespace Nikse.SubtitleEdit.Forms
                     line = _ocrFixEngine.FixOcrErrors(line, index, _lastLine, true, checkBoxGuessUnknownWords.Checked);
                 int wordsNotFound = _ocrFixEngine.CountUnknownWordsViaDictionary(line);
 
+                if (wordsNotFound > 0)
+                { 
+                    string newText = TesseractResizeAndRetry(bitmap);
+                    newText = _ocrFixEngine.FixOcrErrors(newText, index, _lastLine, true, checkBoxGuessUnknownWords.Checked);
+                    int newWordsNotFound = _ocrFixEngine.CountUnknownWordsViaDictionary(newText);
+                    if (newWordsNotFound < wordsNotFound)
+                    {
+                        wordsNotFound = newWordsNotFound;
+                        textWithOutFixes = new StringBuilder();
+                        textWithOutFixes.Append(newText);
+                        sb = new StringBuilder();
+                        sb.Append(newText);
+                    }
+                }
+
+
                 if (wordsNotFound > 0 || sb.ToString().Replace("~", string.Empty).Trim().Length == 0)
                 {                   
                     _ocrFixEngine.AutoGuessesUsed.Clear();
@@ -1024,7 +1048,7 @@ namespace Nikse.SubtitleEdit.Forms
                         if (modiText.Length == 0)
                             modiText = CallModi(index); // retry... strange MODI
                         if (modiText.Length == 0)
-                            modiText = CallModi(index); // retry... strange MODI
+                            modiText = CallModi(index); // retry... strange MODI                        
 
                         if (modiText.Length > 1)
                         {
@@ -1106,6 +1130,18 @@ namespace Nikse.SubtitleEdit.Forms
             return line;
         }
 
+        private string TesseractResizeAndRetry(Bitmap bitmap)
+        {
+            string result = Tesseract3DoOcrViaExe(ResizeBitmap(bitmap, bitmap.Width * 2, bitmap.Height * 2), _languageId);
+            if (result.Trim().Length == 0)
+            {
+                result = Tesseract3DoOcrViaExe(ResizeBitmap(bitmap, bitmap.Width * 3, bitmap.Height * 2), _languageId);
+                if (result.ToString().Trim().Length == 0)
+                    result = Tesseract3DoOcrViaExe(ResizeBitmap(bitmap, bitmap.Width * 4, bitmap.Height * 2), _languageId);
+            }
+            return result.TrimEnd();
+        }
+
         private void LogOcrFix(int index, string oldLine, string newLine)
         {
             listBoxLog.Items.Add(string.Format("#{0}: {1} -> {2}", index+1, oldLine.Replace(Environment.NewLine, " "), newLine.Replace(Environment.NewLine, " ")));
@@ -1452,7 +1488,7 @@ namespace Nikse.SubtitleEdit.Forms
             saveFileDialog1.Title = Configuration.Settings.Language.VobSubOcr.SaveSubtitleImageAs;
             saveFileDialog1.AddExtension = true;                
             saveFileDialog1.FileName = "Image" + _selectedIndex;
-            saveFileDialog1.Filter = "PNG image|*.png|BMP image|*.bmp|GIF image|*.gif";
+            saveFileDialog1.Filter = "PNG image|*.png|BMP image|*.bmp|GIF image|*.gif|TIFF image|*.tiff";
             saveFileDialog1.FilterIndex = 0;
 
             DialogResult result = saveFileDialog1.ShowDialog(this);
@@ -1471,8 +1507,10 @@ namespace Nikse.SubtitleEdit.Forms
                     bmp.Save(saveFileDialog1.FileName, System.Drawing.Imaging.ImageFormat.Png);
                 else if (saveFileDialog1.FilterIndex == 1)
                     bmp.Save(saveFileDialog1.FileName);
-                else
+                else if (saveFileDialog1.FilterIndex == 2)
                     bmp.Save(saveFileDialog1.FileName, System.Drawing.Imaging.ImageFormat.Gif);
+                else
+                    bmp.Save(saveFileDialog1.FileName, System.Drawing.Imaging.ImageFormat.Tiff);
                 }
                 catch (Exception exception)
                 {
diff --git a/src/Logic/OCR/OcrFixEngine.cs b/src/Logic/OCR/OcrFixEngine.cs
index 3c18775ee..e98b00499 100644
--- a/src/Logic/OCR/OcrFixEngine.cs
+++ b/src/Logic/OCR/OcrFixEngine.cs
@@ -575,24 +575,36 @@ namespace Nikse.SubtitleEdit.Logic.OCR
 
                         if (autoFix && useAutoGuess)
                         {
+                            List<string> guesses = new List<string>();
+
                             if (word.Length > 5)
                             {
-                                foreach (string guess in CreateGuessesFromLetters(word))
+                                guesses = (List<string>)CreateGuessesFromLetters(word);
+                            }
+                            else
+                            {
+                                guesses.Add(word.Replace("fi", "fi"));
+                                guesses.Add(word.Replace("fi", "fj"));
+                                guesses.Add(word.Replace("fl", "fl"));
+                                if (!word.EndsWith("€") && !word.StartsWith("€"))
+                                    guesses.Add(word.Replace("€", "e"));
+                                guesses.Add(word.Replace("fi", "fj"));
+                            }
+                            foreach (string guess in guesses)
+                            {
+                                if (IsWordOrWordsCorrect(_hunspell, guess))
                                 {
-                                    if (IsWordOrWordsCorrect(_hunspell, guess))
+                                    var regex = new Regex(@"\b" + word + @"\b");
+                                    Match match = regex.Match(line);
+                                    if (match.Success)
                                     {
-                                        var regex = new Regex(@"\b" + word + @"\b");
-                                        Match match = regex.Match(line);
-                                        if (match.Success)
-                                        {
-                                            if (log)
-                                                AutoGuessesUsed.Add(string.Format("#{0}: {1} -> {2} in line via '{3}': {4}", index + 1, word, guess, "OCRFixReplaceList.xml", line.Replace(Environment.NewLine, " ")));
+                                        if (log)
+                                            AutoGuessesUsed.Add(string.Format("#{0}: {1} -> {2} in line via '{3}': {4}", index + 1, word, guess, "OCRFixReplaceList.xml", line.Replace(Environment.NewLine, " ")));
 
-                                            line = line.Remove(match.Index, match.Value.Length).Insert(match.Index, guess);
-                                            wordsNotFound--;
-                                            correct = true;
-                                            break;
-                                        }
+                                        line = line.Remove(match.Index, match.Value.Length).Insert(match.Index, guess);
+                                        wordsNotFound--;
+                                        correct = true;
+                                        break;
                                     }
                                 }
                             }
@@ -636,8 +648,8 @@ namespace Nikse.SubtitleEdit.Logic.OCR
                 case OcrSpellCheck.Action.AddToUserDictionary:
                     if (_userWordListXmlFileName != null)
                     {
-                        _userWordList.Add(_spellCheck.Word);
-                        Utilities.AddToUserDictionary(_spellCheck.Word, _fiveLetterWordListLanguageName);
+                        _userWordList.Add(_spellCheck.Word.Trim().ToLower());
+                        Utilities.AddToUserDictionary(_spellCheck.Word.Trim().ToLower(), _fiveLetterWordListLanguageName);
                     }
                     result.Word = _spellCheck.Word;
                     result.Fixed = true;
@@ -800,7 +812,7 @@ namespace Nikse.SubtitleEdit.Logic.OCR
 
         private static string AddToGuessList(List<string> list, string word, int index, string letter, string replaceLetters)
         {
-            if (string.IsNullOrEmpty(word) || index < 0 || index >= word.Length)
+            if (string.IsNullOrEmpty(word) || index < 0 || index + letter.Length - 1 >= word.Length)
                 return word;
 
             string s = word.Remove(index, letter.Length);