I have a 1955 Evinrude Fastwin 15hp. The ends of the transom clamps protrude beyond the cupped washers. Anyone know a good way to remedy this so that the washers, not the ends of the clamps, bear the stress of the clamping? The ends of the clamps seem to be peened over to hold the washers onto the clamps, but how do I peen them? There is so little space to work!