While tearing down the deck spindles, I found that the 2 bearings have seals on both sides. I don’t understand how grease is getting into the bearings. Each side has a different type of rubber seal, so how is the grease getting into the bearing. Pictures attached. Grease from the zerk comes out between the bearings, normally I would expect the bearings to have a seal on just one side. Anyone have knowledge of this setup??