1997 Porsche boxster 986 Cab function issues
 

So I have an issue with my Porsche 986 Boxster with the arms that slide on a rail to open and close the roof. They tend to jump out of the rails and then the part that opens slams back onto the car causing dents. I haven't seen many others with my issue. Any tips or tricks on how to fix this anything would be appreciated - Petter