Travel Trailer Tow Shake Down Drive

Getting ready for camping trip with my 5500 lb. (loaded) 21 foot Lance 1685. Luckily my Blue Ox anti sway WDH was plug play (previously used on 2015 Titan). Took it out for a 20 mile tow today, winds were 15-20 mph, speeds varied from 45 - 65 mph.
The Tundra SR5 , 4WD, CrewMax, Premium Offroad TRD did great. Winds were barely noticeable and I could even take my hands off the steering wheel without getting nervous. The Tow + mode is impressive, it downshifts smoothly going up hill and controls speed going downhill without needing to brake the truck. Overall, we felt very comfortable towing the travel trailer even on a windy day.
After selecting the trailer settings, the Center Lane Assist turned off. I am not sure if I shut if off when selecting the trailer tow settings or it goes off when towing? I will check out manual tomorrow but has anybody run into this issue?

 

Manual says that the LTA should not be used when towing and will be disabled automatically if a trailer is detected.

How much adjustment is there on the load leveling bars? Front looks a little high.