ballance problem

as soon as spin begins tub starts to woble {no clothes] shuts down and displays "OL" overload. i already replaced hub even though it seemed ok just to be sure, anything else i can look for? would really appreciate some help Im in the buiss and cant fix my own washer the wifeee is starting to look at me funny! THANKS

Wish I had some good ideas, but without being there to look inside I can only reference a manual for you in case you don’t have one.

https://secured.whirlpool.com/Service/SrvTechAdm.nsf/2cd44500d572193285256a45004fd9d6/409753510a90c8be852571e90073421b/$FILE/8178583.pdf