Anyone who puts one of these beauties in their game should strongly consider applying mylar circles on the symmetrical landing areas where the top kick holes are. Gottlieb learned their lesson from the infamous wear spots suffered on titles like King Pin, JitB/JJ and switched to a weaker coil in the mid-70s. King Pin uses A-5723, but Pin-Up uses A-1496, which gently spits the ball out, thereby minimizing playfield wear. You probably can’t switch your JitB/JJ to use this coil, however, because the ball would never reach your flippers; it would likely get stuck in an infinite loop of rolling back into the kick holes. Another option to consider is covering it with 2PAC, which should be hard enough to protect the playfield from the catapulting.