I have been trying to remove the rear axle from my son's 400 sportsman. So far I have managed to only separate the inner cv joint. No problem, I can put that back together if I ever get the cv cup out of the transmission. I think I damaged the seal too. Anyway, I have been spraying with pb blaster and using a 5 pound slide hammer attached to the cup with muffler clamp and chains. Still no go after 4 days of trying. What the hell else can I try?