rear end woes

George Jets said
Agree, here are photos of improperly set gears, and a properly set gear set with the white grease.

View attachment 1715332080
View attachment 1715332081
Nicely centered pattern, runs quiet . . .

I think in the bottom picture the pattern shows the pinion is not deep enough and is to close to the outside of the tooth. Just seeing it on my phone that's what I see.