[Grandmach]

Not sure if this has been already posted but the small button that controls the thigh extension also controls the seats firmness. When you push that button forward/back it controls the thigh extension and when you push it up/down it controls the seats firmness. I have it at the lowest setting and it's much better, not perfect but better.

I could not understand why my bottom cushion was so firm compared to other GV80's, mine has 22K miles on her so I know the seat is broken in by now. BGT3 I tried what you wrote about the leg extension firming up the bottom seat, you are correct, most people probably do not know about this feature, Thanks!