I replaced and recarpeted the bunks on my trailer and it looks great. But I drilled the holes for the 3/8 lag screws too large and they are not staying tight. I know I can repossiton and redrill the bunks. Before I take that route, it there any kind of shim or filler I could put in the holes and then put the lag bolts back in? I looked at using bigger lag bolts, but the next size in 1/2 inch and I would have to redrill the trailer brackets. Thanks, Ed