Got a Cougar FTD tandem trailer and noticed a burning smell at the landing the other day. Drove back to the house and smelled it again. Touched all 4 hubs and the only one that was hot was the right rear. The entire rim and tire was hot to the touch. Did not notice any drag while I was pulling the boat. First time I have had this issue. Got any ideas as to what might be going on and what I can do?Thanks.