Sounds as if you have it under control, Bob. Lip seals cannot deal with either off-center or eccentric shafts. I also had the impression your shaft might have surface roughness in the area where the seal lip runs against it. That will both wear the seal lip, and leak oil. You need to smooth it out without making it eccentric and with a very fine surface finish. Polishing needs to be circumferential motion: you do not want helical scratches that will cut the seal lip.
