Springs / Load balance suspension

[driller]

I have a 2020 331rl and the port side of the 5th wheel sits 1.5 to 2 inches lower than the starboard side. This is the side with the residential refrigerator, stove, and pantry.

After our recent travels on I40, the side was noticeably lower, and upon inspection, the leaf springs on the port side were flat-lined. They were 5 leaf springs, so I replaced all four leaf springs with 6 leaf springs. However, now the port side is still lower when hooked up to the TV. (but not near as much) The springs are not flat-lined but are considerably flatter compared to the starboard side.

What are possible options to level/balance the suspension? Helper springs, airbags?

thanks!