I'll post some photos when I install my new bedding.
Two 4" high density foam cushions. 10 year warranty from a foam shop.
One will remain up in the bunk area when the top is down - it measures the same as the bunk when the slider is closed.
The other cushion is actually two pieces that is hinged length-wise which will serve as a replacement for the couch.
Got the cheapest cotton cover. Fairly ugly, but I'm not the type to care.
This setup I hope will fix all the discomfort experienced in past trips.
I may also try to eliminate the 1/2 inch step in the bed platform by allowing the slider piece to drop to the same level as the fixed portion.
We have tried feather beds, waffle foam mattress cushions, other thicker but cheap foam and even air mattresses (COLD!) with no success.
The factory foam is not dense enough to provide any comfort.