Hotpoint Goes for a walk?

Hotpoint washing machine WF340
Set level goes walkabouts when on short spins which are supposed to correct an unbalanced load. Jumps about like a thing possesed ending 8" out from under open area work top. Tells you in book if the short spin 'balance' load does not work at end of cycle redistribute clothes then do a spin. User or machine?. Someone said it could be a balance shock spring broken way from the balance weights. Its insured but if they are called and find nothing wrong even though it tries to head for next doors utility room then I get charged call out.
Many thanks for reading and advice if any

bob uk
June 2015