Hey all. I just picked up an old Peugeot UO-8 that I converted to fixed gear. It's from the early 1970s, and it shows. The bike came with cottered cranks that slip whenever I apply back pressure. I tried to wedge the cotters in tighter with a hammer, then a C-clamp, but no dice. Now I'm looking at replacing the whole bottom-bracket and crank setup with a square-taper BB and cotterless cranks. I've heard about plenty of problems with crank-BB compatibility when keeping the bottom bracket, but are there any problems with out-and-out replacing the whole setup? If there aren't, what size bottom bracket would I get?