I thought the cure I arrived at for the annoying thumping/rattle caused by the poor fit between the drawbar and the hitch receiver may be helpful to others. I considered shimming the drawbar, and I did initially to arrive at what needed to be done to the drawbar to build the area for a snug fit. I mig welded a bead across the top and bottom of the drawbar, at the rear on the bottom, and on the top about flush with the front of the drawbar area when it is installed in the receiver with the pin inserted. I then added 2 welds to one side of the drawbar, at the rear and again near the front where the drawbar made contact with the receiver when installed and pinned. I then milled the welded beads down, about .010 at a time until I arrived at a very snug fit inside the receiver on my Edge. The result took a bit of time, and I realize not everyone has access to a welder and verticle milling machine, but the same could be accompished with the welds and a grinder or file. It now fits very snug, and I am sure the thumping and rattling are a thing of the past. I can post a couple of pictures later if that would be helpful. My biggest concern with the thumping due to the poor fit was stress on the hitch receiver when towing. That banging around is not good for bolts or welds!