So lately as I have been riding, I have noticed there seems to be some "play" in what I think is the fork. When I ride over bumps, I noticed the frame, or something on the frame, seems kinda loose and jostle's a bit. It makes a somewhat loud noise. Kinda hard to describe. I have a threadless headset, and made sure it is tightened down, but am still getting this loose shaking noise when riding over bumps. Should I just take off the fork, clean it, and re-install it? Is this pretty easy to do?