Just out of interest, what did you read the RTF with? It's possible that OpenJade uses obscure features of RTF that some viewers might handle differently... Alternatively, it's possible that Windows CR-LF line endings might be causing problems somewhere along the way.

Also, did you enable any of the optional features (multi-column, scaling, etc.) of the stylesheet?

FWIW, I used Ted and AbiWord to look at my results. Ted doesn't support multicolumn output, and I've sometimes seen strange results due to my use of the keep: characteristic, but I worked around them for the viewers I have.

Glad you got as far as producing RTF, though. That's good news.