RE: Side to side play in cams?
A tiny bit of slop is normal. The wheels can't be so tight that they can't rotate freely around the axles because arrow speed will suffer. If you hold the bow up to the light and can see daylight anywhere between the wheel, spacers or limb, the spacers are either worn down some or were never the right thickness to begin with and could stand replacement. If you decide to replace them... While you've got the wheels off and axles out, might as well have the bushings in the wheels replaced. Check the axles for wear and straightness and either clean or replace them. Lube the axles before putting the bow back together and it'll shoot like it did when it was new.