Another ‘dadgum’ post re: tire PSI…please bear with me…

I know and agree with posts relevant to ‘have your coach weighed’ and I have done so although not four-corner weights. Axle weights indicate 80 psi for all tires. In the title, I said this post was about tire psi and that is, at least, partially correct. But, it’s also about that age-old problem of steering wander. Let me explain, if I can. Wandering has been a problem since the coach was new (2017). I’ve added rear stabilizer, front stabilizer, steer safe and had alignment adjusted to 5 degrees camber (not sure that’s the correct terminology for the alignment). After all the add-ons and alignment, the problem still exists. Here’s the interesting part. As you know, as tires turn they build up heat and psi increases. When I start out on a trip, the tires are at the cold 80 psi and steering at that psi is beautiful (Cadillacish good)…well maybe not quiet that good, but no wandering. No wandering continues until psi reaches about 90 psi or slightly above. That’s when the steering wheel gets a work our along with the driver (that’s me). After all of the above, here’s the question: In order to keep the tires’ psi from increasing quickly to a point of ‘wander’, would it be safe to reduce the cold psi to say 75 (remember Goodyear says, based on weight, cold should be 80). In our Florida very warm weather, the tires, starting at 75, would rather quickly heat up along with the psi and exceed the cold 80. But, in so doing, the psi might not reach the wandering problem. At least not as soon. Comments welcomed!