You could even get two and put one underneath the deck.Don't know why this is always such a problem. Go to walmart or any kitchen store, Buy one of the plastic cutting boards, level the troller quick release plate or the troller itself on the deck and make a pattern for the shim. Cut it from the cutting board. Drill the holes and go fishing. Paint the shim to match if you wish. It won't rot and you get the fit you want.