I solved the Sports Bucket seat fit issue on our Cayman R. My other half is quite small and the non height adjustable seats were too low for her. Solution - a Sparco seat base support cushion for under £30. She now sits at the perfect height and loves the seats. I find the seat doesn't give me lower back support so makes longer journeys uncomfortable. Solution - a Sparco Universal Backrest cushion for £20. With this in place I've driven the car for over 4 hours without any issues. Had these items been Porsche branded they'd have cost 4 times as much no doubt indecision