Have the rear sprocket off for cleaning. Had alot of buildup from chain lube so I washed it off with kerosene. After blowing it off it was nice and clean but I noticed the bearing did not appear to have much lubricant in it. Before reassembly should I put some type of lubrication on the bearing? If so, what should I use? The bearing spins freely, but it seems to me it should have some kind of lubrication.