Hi All , Recovering my 99 boxster seats. I started with the seat back bolsters and all went pretty good. I'm having trouble getting the last 6 inches of the vinyl molding or edging into the plastic channel on the back of the seat back where the map pocket is. It keeps popping out....i even tried a little contact cement but not working. Any ideas?

 

Try gently warming the leather with heat gun while stretching it over the seat.

https://www.wikihow.com/Stretch-Leather