have drilled 3 wmb, sold all after a few games, had the same reaction that you described, lots of rev and no finish, emailed Fred C. at morich, his response was that he did not match up well with the vanguard weightblocks himself, as in my reaction , he said his ball held the axis of rotation (high axis tilt) too long and never released or tumbled into the back-end, the older morich equipment matches up much better for me, as in the T.A. and Ravage