[Yosemite Sam]

I see there are a lot of people who read your post/s and you have no answers.

I can't speak for anyone other than myself, but I don't know if I understand what you are saying about the grease not getting into the cavity.

The hole in the center of the spindle shaft that the grease is pumped into terminates well in between the seals.

The seals should be put in so that when you add grease it can push past the seals without actually pushing the seal out of its seat.

I hope this helps.