If you lost reverse, isn't there an adjustment on the outside of the transmission that comes loose causing that? Or maybe that was an earlier edition than yours? Also, isn't the B2 pack the cause of losing reverse in most transmissions and that can be done in some/all with the transmission still in place. As you can tell, my transmission knowledge is a little shaky since I've never had the privilege of having to do it. I'm just trying to recall some info from previous posts that I seem to recall. Maybe a search will bring you an easier solution.

Len