Re: Beware - transmission output shaft is not 5/8"!
 

Last year, we lapped out the sprockets with valve grinding compound on a drill press. We used a short length of old 5/8" shaft as a tool. Took forever, but the precision and fit was fantastic. This year, due to needing four sprockets, we uses emery paper to reduce the shafts. Since we are swapping sprockets at the last minute, this saved a lot of work.