RE: miss budweiser prop shaft
good suggestions from chief for the shaft, but i may not be reading your question right. can you get it into the stuff tube all the way up to the motor, and not through the last part into the boat? if that's the case, then a little work on the end of the stuff tube might be in order. the drive dog with the pin may have mushroomed the stuff tube, the part the shaft rides in, if the nylon spacer wore out. take the motor out, and carefully ream the end of the stuff tube, with a proper size drill bit, (about an 1/8 inch will do it)until it has it's full diameter, enough to let the shaft come through. make sure you have a nylon spacer there between the drive dog and the end of the stuff tube, for wear.
like i said, i may be off base, but these two suggestions at least cover both scenarios, let us know how it goes........
davey