cut a flat spot in shaft for the pinion set screw?

[jhautz]

I had that problem once when I went a little crazy with the blue locktight on the grub screw. I seeped down n between the pinion and shaft and that sucker was stuck on there. A cigartte lighter on the pinion and then carfull prying got it off though. just go slow and try not to overload the motor bearings while you are prying at it. A gear puller is the safe way to do it, but its kinda hard if you cant get the motor off o f the mount with the pinion on it.