I bolted a 12 by 2 inch steel bar plate which had a small " lip" on it’s top edge .
I figured it would stop the motor from slipping of the plate if ever the screw pads came loose.
you can make one by trimming down one side of a piece ce of angle iron
if the lip interferes grind a passage way flat for the pads and slip the motor sideways against the lip section or slide the motor sideways from the edge of the plate and guide the pads below the "lipped" section
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