Generator info needed

[Ken Hughes]

is it leaking from the gas tap
some of those old gas taps had a cork seal inside that shrunk and caused them to leak
i had a late 40s triumph motorcycle that had cork seals in the gas taps , you can swell the cork seal by boiling in hot water
i would leave the cork seal inside the tap as its bloody hard to get back in after
someone else may have some better suggestions if its a cork seal???