"Mikey S." wrote:

The orifice is at the end of the valve, the little precisely
drilled hole that lets the gas into the venturi. Since it's always
been on natural gas though I guess that's not the problem.

Mine has nothing that looks like a precisely-drilled hole; the gas
comes out of the valve, turns a couple corners, and squirts up into the
bottom of the venturi. The only holes involved that look at all
precise are in the body of the valve, and they do the high/medium/low
selection. Maybe that's why it likes to flash back.

maybe
the burners just need a good cleaning, my grill gets nasty every
year and burns yellow till the burners get wire brushed and all
the little rusty holes in them poked open again.

Could be. There seemed to be a lot of rust on the burner, flaking off
quite a bit. I tried to knock off as much as I could without wrecking
it, but I didn't brush it or poke anything in the holes. I'll give it
a shot.

--
Ray Heindl
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