Checking the combine over today I noticed oil leaking from the 90 degree gearboxes on my rake up pickup. I checked in the parts book but no seals or bearings listed for those little boxes. Called dealer and nothing available only a new gearbox. Which is on back order and close to 800$. Has anyone re sealed these units before. I’m hesitant to open them up and not be able to repair them. As it is I can add heavier oils until I’ve finished the season then overhaul them all. Any advice or leads on parts. Thanks.