Rich
The new coach has a posted 1,974 pound CCC less 673 pounds for the water load (also posted) leaving the actual CCC for people and cargo of 1,301 pounds. I have weighed our new coach and it was pretty close to listed dry weight.
I am not really interested in individual wheel or axle weights in my post. The coach has seat belts for 7. That alone is 7 X 200 lb per person is 1,400 pounds.
Will replacing the rear springs increase the capacity by 2,000 more pounds? Seems to me that it would, but what else might I be missing since everything else; axles, brakes, etc. are all the same as the 26K chassis. Will handling or ride quality be adversely effected?