What i find really weird is the passenger seat has adjustable lumbar support but not the driver! Where's the logic in that?
I find myself 're-seating' every half hour or so on long journeys which helps a bit. Ive often thought about putting a small cushion or support behind the seat cover to help, but haven't got round to it yet!
Seems a bit drastic to change the seat, im sure somebody will come up with a brilliant idea shortly. You'll just have to sort through all the usual crazy comments until you find it! :D
Ben