The wear is occuring on the bottom. The serving gets completely worn off after 20-30 shots, and even the string begins to fray. I have shot it about 500-600 times total, only 60 though on the new string that was put on yesterday. I'm beginning to think the cast of the cams on my bow may have had an imperfection in it during production. Either way, the wear that is being caused goes way beyond the white hairlike clumps you are talking about. I was told that is what should happen. I read on here that a guy said that this isn't uncommon for Bear bows to show excessive serving and string wear early, so he polished his cams with a Dremel tool, and the problem never occured again.