The bolt holes of my 39-tooth Campag. chainring are not countersunk, in contrast to those of every other 135mm BCD Campag. ring I have owned. What gives? (Right now, the nut portions of the five mounting bolts barely clear the right chainstay. If the (Veloce) crank ever fits farther onto the spindle, I'll be in trouble. I am currently building it as a triple with long stack bolts, because the crank sits out so far from the centerline.)