I have a problem the two domed rivets that go in the rear of the top plate are to short they only stick out about a 1/16th of an inch after grinding half the head off to fit under the lip. There is not enough rivet to dome or fill a countersink. My rivet set came from sarco. They are the only two domed rivets in the set. Anyone had this problem before? Is there anyway to remedy the situation without buying a new rivet set?