So, we did a short trip to make sure everything was working well in the trailer. Good news, it was. However, we did uncover a huge problem, the official truck of TLT started to experience slippage in the transmission. It occurred both with and without the trailer and grew slightly worse from the onset of the issue until we got home. I stopped on the way to see if it was fluid and the Ford mechanic said it is a sealed unit, cannot add fluid. He thought it was the 1, 2 and R module (4, 5 and OD are separate) but I doubt that as it twice did the whirring noise at highway speed with no apparent reason to shift or change gears. So, thanks to a lot of time on the internet I have dropped the truck off at a transmission specialist this afternoon. Waiting on his call Monday early afternoon.