Originally Posted by dasding

I removed the headset and faced/reamed the headtube to accept a 30.2 mm OD cup. I also got a new tange levin headset and pressed the cups in. But now for some reason the 27mm crown race fits on the steerer pretty easily, and it has a little bit of wiggle in it. I'm positive that the original unit that was on the bike had a 27mm crown race, as I measured it with my calipers. It looks to me like the ridges that the race sits on are worn out--does this happen? The surface that the crown race sits on measures 27mm OD, which would explain why I can get the race on by hand--there is no interference. Is it common for this surface to wear out? or am I going crazy and I actually have a bike that takes a 26.4mm crown race despite what the specs say, and what the old headset seems to be. If it is worn down so that I can slide the 27mm piece on, can I just go down to a 26.4 mm race. As this is the second headset I've purchased, I'd rather not buy a whole new unit.