I got my 1977 Upper/Lower Unit torn down for inspection and the drive shaft gear is toast (three broken teeth) the yoke assembly gear has some pitting but nothing broken. Anyone have any suggestions?<br /><br />Also, I didn't need any special tools to disassemble this, I used to work on mechanical stamping presses so have some ingenuity and wasn't afraid to tackle the job. It's just I need to find cheap used parts to fix this thing.