I had the same problem on my Q2 - to the point that I was tearing up cables. The cam would rub the cable serving to the point that I had a fuzzy mess on the serving just above the cam. Took it to the pro shop where they replaced the string and cable. It tore up that cable in less then 50 shots. Back to the pro shop a 2nd time. This time they did the same thing but put an extra twist or two in quiver side of the top cable yoke. Didn' t help - Tore up this cable in another 50 shots. The third trip to the shop ended with me leaving the bow with them to send to Mathews. It ended up that the axle holes in the lower limb were not drilled straight. As the bushings wore out this caoused the cam to cant and get into the cable while drawing the bow. Seems it was bad from the day I brought it home, it just took the bushings wearing out to bring it to light. By the way, Mathews wouldn' t do anything for me but the proshop did give me my $ back for all the cables, strings, silencers, etc that I had to keep replacing.