69 dart custom 2 door. Bench front seat - seat backs split 50/50 and pivot forward for rear access. Bought two hinge covers from Mancini, but per pics below they interfere with the pin on the seat back that catches/releases for pivoting forward and snapping back in place. Any thoughts? Wrong part? Bad parts? cut out the interfering portion of plastic? Sleep on it cuz I’m a moron and installed them wrong?