Thank you Brian for looking into this. Maybe this sound dumb,,,,,,, while I am no machinist, I do have a couple of complete sets of English and metric Allen wrenches, plus a box full of misc. I didn't find any that fit right........ I found loose fits, and just a bit too big fits..... Where as I have a bunch of 1/8" Allen wrenches. Doesn't an M5 set screw boarder on a specialty size?
I came very close to trying to just tighten these set screws with what I had, as it was late at night and I wasn't thinking well. But then I realized I'd be the one stuck trying to deal with loose set screws. I will drill mine out and end up with a bigger/common sized hole in my pinions.
Thanks, Chuck
Chuck Keysor (circa 1956)
PRT Alpha 60" x 144" (circa 2004)
Columbo 5HP spindle
Aspire 9.0, Rhino 5