All good advice here, thanks. The current setup was done by the dealer and steering and braking all feel very good. I'm 1,800 miles into a trip and all is well. I will work on checking tongue weight, etc and measuring the drop of the TV. I'm currently thinking that if it ain't broke, don't do anything.
. On the way back home on this trip, there are several spots I can weigh the rig. I'll give that a whirl.