Wrinkles in Legendary backseat back...**PICS**

Hard telling without pictures just how/where the wrinkles are. but could it be due to a lack of padding in the specified area? or have the spring in the back worn out/been bent in some and not allowing it to push against the materiel to aid in taking the wrinkles out.

if all is well then I would have to say it is either a bad fitting piece that you might want to try contacting them about a replacement. OR wasn't installed perfectly. I would try a blow dryer and some stretching and see what that does for you maybe?.