Well, got my bearings all done but have a stupid unrelated question- the spindle and the bearing are a slip fit - what keeps the bearing from just spinning around the spindle? Issue- 2 years ago I pulled my calipers all apart and put new seals in them. On wheel 3 I see the dust seal is cracked in several places- does not look melted. Pulled caliper off to replace and I can't get the piston out. When I did wheel 4, noticed the same thing in the cover but dud not pull that one off yet...they are pretty new to be doing this?