We received our new 2017 16BHB last week and are busy outfitting it for our first trip Thanksgiving weekend (who knew you could spend so much money after the purchase?!). We love this trailer so far but I took it out for a test pull after it arrived and the banging and clanging from the hitch area drove me nuts. So I started checking things out and bought a clamp to tighten the ball mount to the receiver which helped. There is still lots of noise though so I checked the ball to coupler fit and found 3/16" vertical play present. I checked the Curt ball size and it is 2 5/16 according to my Brown and Sharpe calipers. I can't find any way to adjust the coupler to make the fit tighter. Anyone have any info on adjusting the 'RAM' class IV made in China coupler?