[hyatt]

I have seen what you are talking about before When you remove balancer keyway in crank will probally be bad Balancer will probally come off with your hands If crank is tapped for a bolt epoxie a new key in crank and replace balancer If not tapped see if you can tap it for a bolt Otherwise you will have to replace crankshaft The only other alternative (and not a proper fix)is to spot weld balancer to crank to get you by until you can pull engine and fix it right