I picked up a set of the Trinity ceramic bearings. After cleaning them out, with no seals they spun very very smooth and for a long time, squeezing the bearing didn't seem to effect it much which means they should be great under high load. However, with one teflon seal installed, the bearing doesn't spin nearly as nicely, not bad but not as good. My question is, is there any place where I could buy just metal shields??? I want to be able to run a shield/seal on each bearing, but the teflon seals added too much drag, and I'd rather just clean the bearings out often than run the teflons.