Progress report on grinding the pad...thinking I had previously ground off as much as I thought I should, after this renewed discussion I went back and worked on it some more. This time, I concentrated on the corner pointed out in the OP's initial post. I took that corner down as much as I was comfortable with, being careful to leave adequate "meat" for the set screw. This morning, I went out to one of my favorite left-hand peg-dragging corners, and voila, no more contact with the pad
. Considering this, I would now say it is possible to reshape the Rivco pad so it won't be a problem. Glad this subject came up again because otherwise, I would have removed the pad permanently. Thanks, OP!