Hi all. I finally found a b1640 loader for my 6200. Its pretty thrashed but repairable. The cylinders need resealing. I have taken them all apart and everything is in great shape except the seals. Anyone have a source for seal kits? Also, is there a difference in the 2 sets of cylinders? They have 2 different part #s and are listed as different parts but disassembled they appear to be identical.