I have a giordana frame so I put in a shimano italian threaded bottom bracket. It's my first fixed gear, and I'm liking it, but today when I was riding, as I was slowing down I suddenly felt the rear wheel lock up. I took it off the road and the cranks won't spin. i inspected the bottom bracket (not the insides) and it looks like one of the cups of the bb is protruding more than it should (if it should at all).
so, what's up with this?! will i need to replace my bb? it was new. is this normal that it just lock up? i hadn't noticed any problems with it; no noises, cycling was smooth, no indications. can anyone tell me what's going on? thanks!