Mark,
Ooops, sorry. I hadn't appreciated you had the body out already, although you say so clearly enough when looking back.
Sticking anything to an oily ball is a challenge without adding the difficulty of going down inside a hole. Clean it as best you can with a plastic tube with bog paper up inside it, then rest a clean tube cut cleanly for a square end on top of the ball and run a little Loctite down inside and leave it to bond tube and ball together.
Have a tea break and then pull with care and a prayer
Regards
Brian