If you have already done axle weights as you stated in your OP you are close enough number wise to adjust according to inflation charts. Every time we got new rubber on any of our RVs over the last 3 decades tire installer always put max psi as stated on sidewall, no real biggie as I would adjust psi to my preference. On our towable RVs we ran close to max psi, on our motorized RVs we run approximately 20# below max psi.
Sure, it would be nice to attempt to get your coach weighed on each corner believing you have the exact weight every time you hit the road, but real world numbers will never be that precise. How much water do I have in each tank, or did I purchase too much at walmart that tire inflation needs to be adjusted, come on folks on a 22K# rig a few hundred pounds in either direction is meaningless.