My Vh65 is leaking gear oil from the rear. The oil is running out between the large round plate and main body. I have never opened this before and don't want to screw it up. It looks like the small round plate in the middle has a set screw for locking position and three holes to unscrew it with a pin wrench. Before I build a tool, please let me know if there is an easier way to change out the leaky seals / o-rings.

All the best,

Andy