So, after a routine maintenance, ( 92K Miles ) changed all fluids, front and rear differential, Engine oil, Transmission with pan and filter, and transfer case, as always I used dealer fluids and filters, however this time the transfer case started leaking fluid from the rear output flange area, only leaks when driving, so it's hard to pinpoint if it is the rear seal or the covers with out pulling the transfer case, if it is the rear output seal, the chain will need to come off for replacement, but the dealer does not sale the chain, and I can't seem to find it anywhere, I would hate to reassemble everything and leave the old chain with 92k miles, any ideas were I can find this part?