I recently bought a 2006 BMW 525d Touring with sport seats. Am I alone in finding these seats fairly uncomfortable? The backrest is totally without shoulder support, and longer journeys become a strain on the shoulder and neck muscles. No amount of adjustment can improve the support. And the headrest is at best a good hand's width from my head. Do you know of any solution? Perhaps the current (2009) seat has a better-shaped backrest and one could get it changed, if that is technically a possibility. I would be interested in your comments and recommendations.