i had to cut my pinion gear off the shaft with a dremel. it was the only pinion gear i had besides my (now broken) rcm gear that i had just gotten that fit and wasn't worn out.
They say a good mechanic only needs 2 tools - WD40 & Duct tape. If it moves, and its not supposed to, duct tape. If it doesn't move, and its supposed to, WD40.