triple checked, s/c is not turning, pulley on the front is but the internals are not. it seems that the cover does more though, the main pulley turns and there is the cover on the front (not turning), between the two is another metal area which also does not turn - the main bolt in the front also does not turn. It seems from looking that the three screws on the front don't hold on the plastic cover at all (the central bolt does this) - it seems that the three screws are what connects the pulley to the shaft for drive - any comments on this?