Originally Posted by slotracer577

CRC pinions have both 4-40 and metric set screws. Its quite a pain. I have CRC pinions from 60 to 80, bought at different times. The 70-80 are all metric and need a 1.5mm driver like my Trinity pinions and my 60-69 old pinions are all 1/16 wrench like PRS. I bought a new 62 last week and it uses a 1.5mm driver.

why could they not just stay with one size? either one would have worked, but not knowing which is which, is a pain.