Using the document engine and the RTF converter, I believe that the converter is not properly handling tabstops in columns. I have attached an example rtf file that can be shown in Wordpad to illustrate the proper tab handling as well as a screen shot of the file as rendered in the preview generated from a document - both in a ZIP file.  I had previously provided a slight modification to the Infragistics document sample that could be used to deal with a similar file.