When I bounce my bike up and down there is a squeeking noise coming from the rear end. The problem is I can't pin-point where the squeek is coming from. It sounds like it's coming from around the swing arm or rear shock. This sounds like a stupid question, but I don't want to start tearing the bike apart until I know where the problem is. When I say "sqeek" what I mean is that it sounds like it is dried out and I am in desperate need of lubing the area. Has anyone else ever had this problem?