I am putting on new front rotors, I have removed them and separated the hub from the old rotor. I replaced the wheel bearings not too long ago, but I noticed the inner bearing is loose in both hubs between it's race and the shaft seal. Should this be held tight in its race by the shaft seal or is it held in when installed? Currently the seal is flush with the inside edge of the hub, to hold the bearing in it would require pushing it deeper into the hub but I am not sure it would then fit far enough on the spindle to do its job. Where should the shaft seal be? What say the experts? Thanks.