Might be a challenge tofind the exact pan. How about a new shower mat? Or I have heard of servces that can repaint. Mine is not discolored but is severely lacking for under support and always has been.
Bags & hoses need to be seperate. On a long turn the air could become unbalanced. I had good luck with these on previous rigs however, in the current Kia I have replaced both bags numerous times. Still a mystery as to why the Mfg is not fixing the problem.