So I recently built an SS for my prof but I found the freewheel I got (a cheapo ACS Main Drive) to be absolutely abysmal. It sort of "catches" occasionally, such that he can feel a sort of clanking every once in a while, especially up hills. I also noticed that if you walk the bike backwards or forwards, occasionally the teeth engage extremely briefly and the pedals move. I squirted lube in there like mad, but it hasn't seemed to alleviate the problem, and now I attribute it to just cheapness. It's also extremely loud. I suppose I can't expect much as it only cost like $12.
Any recommendations for a nice, smooth freewheel that won't give my prof such a scare? He was willing to spend up to $100 on one, but I think I'd like to keep it under $50. 1/8", 18T.