When we took all the other defenderworx stuff off I didn't have the gas cap cover. I just so happened to find it in a box today while messing around in the garage. I have to wedge my fingernail in to open it but that's fine. It's easy and I like the look better this way.
Only thing I have left now from the defenderworx hook-up at C5FI is my shifter and fender SS emblems.