Well I bought from a place that does the build and basically ships the bike so that all you need to do is put the wheel, seatpost, and bars on, so I am (perhaps naively) assuming that they would have properly built the bike. Also it was perfect for the first two rides, so would I be wrong to think that it wouldn't need more grease that soon? Would a badly installed/ greased BB make noise on only one side of the BB?