Like most Tecate's, mine leaks through the shutoff valve from the gas tank. Someone at one time or another put a second shutoff below the original but still running the gas through the original shutoff apparently because without the factory shut off in the tank it would leave the big hole where it was. Of course now the second one leaks thru also and the factory one is starting to leak thru the back. I know I could just replace the second one but is there someway to rebuild the original so that the big hole isn't there in the plastic and so that it doesn't leak through? I'm sure these can no longer be purchased. Thxxx...Dean