I was replacing a worn out rear hub bearing and noticed that the replacement bearings left a slight axial clearance with the hub when secured to the axle -- about 0.020-0.030 -- which meant the hub could potentially slide that amount side to side during cornering or other side loading. Not liking that, I made a shim to go underneath the bearing on one side, but not having anything to really tune in the thickness, the best I could do was about 0.005 or less gap, but this time between the bearing and the step on the axle. Anyone have any guidance or a reference about how much clearance or interference is acceptable in a fit like this? Made a couple pics to try and explain it better.