I've also noticed very little "adjustment" when playing with the lumbar support toggle.(Our FIAT L seat felt like it had a lumbar cushion when adjusted).
My lats and spine erectors have been "pronounced" since Junior High; so those are the last muscles to touch the seat usually. I don't try to touch the seat with my shoulder blades normally. I'll agree, it would be nice to have the head restraint a bit farther back(maybe an inch); but all in all, I like the seat.
It's funny to me how my 24 year old 850R is the most comfortable of all my vehicles. Even after so many years. The lumbar support in the 850 is adjusted by hand and much more substantial onece fully inflated and has remained so
Unfortunately I have lost a lot of muscle mass with age. So lats an erector spinae are very thin on my back. So in the XC 40 I do need that extra cushion between my shoulder blades. There seems to be a lot more padding in the 850, and also the headrest is more upright.
Overall I like the seat also. One of the reasons I chose the Redesign was that seat was the extender. I would have liked a cool ventilated seats, but I couldn't find that with the options that I wanted. And I think once I've had the car for a longer period of time and made some additional adjustments and just gotten used to it, I will find it more comfortable. I remember it took me several weeks with the 850 to get the seat where I wanted.
Nora in Florida
Sent from my iPhone using Tapatalk