Did you get that seal replaced and did you learn anything that might help me in replacing the rear pto seal on my b6100? I would rate it at a 7, by the way.
The shaft for my brushhawg was too long, thus when i raised it too much, it pressed the seal inward and loosened it. The rubber collar on the seal provides the pressure fit so a few hits with a rubber mallet and a 1 1/4" tube provided enough to force it in place.