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Nice start on the conversion David. How long do you think it will run on the gas before having to refill the tank?Bill
David, your motor has two holes in the cylinder head, I wonder if the hole was enlarged to a slot whether the intake velocity be reduced.On my motor, I changed from one 1/4" diameter hole at the side of the head, to a slot3/8" x 1/4", it still blows out the flame until it warms up (spirit burner), but I think it is improved over the small hole.For a gas flame I can't decide if the flame should be a soft one, or a hard one(as in a gas torch), I suspect it may be the former, with the top of the burner well below the intake. Ian S C