If you put the curved bats on the spreaders and rotate them it will probably hit the "hood extensions", (what the rubber flap hangs off). If so, you will need to drill holes higher up where the spring loaded latches lock this in place. If you don't and they hit, the bats will make a mess. All you are doing is raising the tray so the bats don't hit beacause they are higher than the original plastic ones.