Slip 2000. Buy a pint jar of it, drop the gas valve in and leave it a few days. Take it out and wash all the crap out of it under a faucet. For extra cleaning action, haul it in your truck for several days, allowing the valve to slosh around in the jar of liquid. Works great for extended choke tubes, too.

Good stuff, SRH


May God bless America and those who defend her.