Joe, you wrote<br />"The cure is to remove the armature plate so that the support which is attached to the powerhead with 4 screws is visible. Then, with a screwdriver and hammer, or some tool of your choosing, and looking straight down at the support ring, make an indentation at what would be called the 12, 3, 6, and 9 O'clock positions."<br /><br />Is the support ring (for the armature plate) you are referring to, the removeable one with the notches for the four bolts, or is it the threaded ring recessed in the block. If so, is the purpose of indenting to tighten this ring in its channel by expanding it, or to drive the ring down.<br /><br />Ian
