Hey all, I've got a weird frame in the shop, seems to be a vintage tig welded road frame with a threadless bb. The shell is 68mm and was built intentionally with no threads. THe bb I pulled out used skf explorer bearing, size 6003, retained around an axle with a pair of c-clips. THe guy who brought it in wnats to use it as a fixed gear but has been having problems with the c-clips popping out, any idea if this will work or should we just thread the bb shell?