i wonder if your limbs are weekening and making the cams do this.. especially since you checked the axles and bearings...when i put my laser checker on my relfex (hoyt)onthe sight mount and tracked a laser from nock to cams (top and bottom) the laser would eventually point at the wall,, being way off .. a week later one of my limbs had a narly crack in it.. dealer cant figure out why it was doing this.. never dryfired .. who knows.. maybe itll be better when my limbs are in and replaced..