Trailer front wheels warmer, WDH the cause?

Question: Will having the WDH set too tight cause extra weight on the front axle of the TRAILER? I followed the directions for re-setting up my weight distribution hitch and now the tires on the front axle get much warmer than the rear axles and the tire pressure increases (of course). The tire pressure goes from 50 to 70+ pounds. I know that is still a safe place to be, but it would be nice to know what is going on so I can reduce the problem. Outdoor temps affect this a little, but do not seem to be the cause of the problem. This did not happen before I 'tightened' the WDH more. I setup the WDH so the differences between the front and rear height of my Toyota Tundra are about equal to what they were without the trailer. I went from my previous 3 links unused to 5 links unused. I have checked for dragging brakes, moved weight from the front to the back of the trailer, checked the wheel bearings and re-greased them. None of which made any difference at all. I am checking the pressure with both my Tire Minders and a hand psi tester. I am checking the temperature with both a laser and the Tire Minders. I have moved the Tire Minders to other tires and still have the same problem with the same axle. It appears something changed when I changed the WDH. Could the WDH be too tight? Thanks for any help!
TV: Toyota Tundra
Trailer: North Trail, 4600lb dry weight, dual axle.

A 20 psi difference between cold and hot tires is way too much. Something is wrong.

Also, for some reason that you did not share you felt the need to adjust the hitch. Why, if it was working just right or were you fixing another issue?

I would swap the tires front to back and see if that helps. That can provide information if it is the tires or the hubs/brakes/bearings. Then with an infrared temp probe watch the hub temps front to back. Not the tires, but the hubs and see what the temps are. They should be close but will never be exact. Don't do a lot of braking before testing just sort of coast to the side of the road in a safe place after 15 minutes at highway speeds and then take the temps. Something is seriously wrong and it is likely not the hitch. Also, when you rotate the tires front to rear check the brake drag for each wheel.