I'm replacing the chainrings on my Sugino Mighty 500x crank. Unfortunately, the large chainring doesn't quite fit onto the spider - the flanges in which the bolt holes are drilled have about 1mm worth of "extra" material at the bottom which prevents them from seating properly.
I had the same problem on the first set of chainrings I purchased, and was advised by some BF folks, as well as the shop from which I purchased them, that a little grinding would take care of the problem. Wish I'd listened then - I'd have saved quite a bit in shipping parts back and forth.
Anyway, it's too dark out in my shed to start grinding tonight, so I figured I'd ask - is the regular grinding wheel I that came with my Dremel going to do the trick here, or do I need to go purchase a file of some particular type from the hardware store?
Your thoughts appreciated.