The receiver on the tundra is really loose and the trailer receiver is loose also, add in a ball in the middle and you have a lot of movement. As you go down the road the tent hits the wind and took weight off the tongue and all the looseness at the hitch would let it move a ton. I added 9" of tongue length and added material to the hitch tubes and replaced the hitch on the trailer, all it tight now and at 70 it is smooth sailing. now the issue is the larger tires are rubbing the fuel filler on corners because the tent weight up high creates more pressure, the tank will probably go.What issues? I'm guessing with the high COG that the trailer is super squirrely? Longer tongue and more tongue weight might help?