I was wondering if anyone has completed the game? I'm on the last level (free those Zebras - yahoo!) I'm stuck at the part where you shoot the bullseye over the door, jump on one of the white platforms, it starts moving toward a fire stream coming down from overhead. It looks like you need to shoot the porridge gun at the turnwheel right in front of it, but that's not doing anything I can see, and I keep dying!!! Any suggestions? thanks.