im having the same trouble. Im understanding that first you should check machine is level.. if not... correct that and test it.
if that doesn't help...this machine has four springs holding
the tub assembly in place..if one is weak or broken the
tub will go wild. Replace them..not expensive. V good information about open this machine to get to these
springs on 'repair clinic'..google it...good luck
aidan.
December 2010