So I have a 1978 coleman 505a that i'm trying to return to its former glory. When I tried to pressurize it for the first time, it leaked where the generator met up with the burner bowl part. Upon taking it apart, I realized that my on/off lever isnt fully closing it off causing it to leak when i pressurize it since the system is allowing pressure to flow thus causing my leak (i assume???). How would i go about fixing this? Is it as simple as a new o ring? Any information or direction would be appreciated! Also (possibly related), is there supposed to be a little wire hook thing coming out of my generator assembly to my valve? Or is that not a part on these stoves?