the pully slips off the helix during spin and bangs while it tries to engage the helix. Wont spin unless i manually spin the pully cw to agitate position the turn it on to spin. it may spin for a while before pulling away from the helix. The washer will agitate the whole cycle though. i put on a new belt but that did not help. Just how does the pully and helix work together and could the be wore out. The pully really pulls up and away to the brake during spin.