I thought the games came from the factory with different tooth counts on the tighten/loosen gears. My Key West has a fine-toothed gear (the "loosening" gear) with an embossed "3". There is an spare gear screwed to the rear door with an embossed "5," same as shown in the photo above. That gear may be even finer-toothed than the "3" gear - it's hard to tell without having both gears on the workbench.