I replaced my front u-joints tonight and I noticed a very faint squeel that speeds up with wheel speed. I don't know if its just one of the plastic "tube seals" rubbing or if I might have slipped a needle bearing under the cap. Would I be right in thinking that if it were a needle bearing under the cap I wouldn't have been able to get the c-clips on or I would have noticed something more severe than a very slight squeel? Help me out guys...