Thanks for the info regarding the attach screws for the fuel shutoff valve. Found the 2nd one and removed the valve, replaced the "o" ring. The 2 attach screws have a very shallow torq socket and I had a tough time gettin the hidden one out. Replaced both with Allen socket head cap screws, which have a deaper socket. All "o"rings have been replaced so hopefuly no leaks. It's a dumb design. Again thank for all the help.