2019 Furniture - Sofa & Theater Seat

[R & S Woodie]

Just pulled sofa out in preparation for kids spending a couple nights and it is pretty much not useable as is. There is about a 3/4” to 1” rise where the mechanism connects to frame to lay the cushions flat - feels like a bar across your mid back. Also, the folding leg raises that section up higher than rest of bed (maybe sofa was actually intended to be on a slide, not the flat floor). We have tried adjusting with wood blocks to level, which worked, but can’t compensate for the mechanism that cuts into your back. Tried a 3” topper but still feel the raise across your back. Now looking at an air mattress to put on top but that is 9-12” high. Anyone figured out a solution.
One side of our theater seating has noticeably sunk from the other. Springs look good. We would put stiffer foam in cushion but not a zipper cushion.
Unit is less than 6 weeks old. Hate to think we have to replace furniture.