Some info, other's hopefully with similar issues will share their solutions - http://forums.bimmerforums.com/forum/showthread.php?t=1638503 http://forum.roadfly.com/threads/12649138-Dreaded-Seat-Twist About M5's, but I believe is relevant and helpful, and pretty much the same solution to the same problem http://www.m5board.com/vbulletin/e3.../159724-complete-diy-twisted-seat-repair.html That's just a bit of what comes up from googling if one searches either "BMW E31 twisted seats" and/or "BMW twisted seat repair"