I've done it he boil with lemon juice, sometimes I get the gray sometimes not.
My latest weapon for dirty carbs is a ultrasonic cleaner with mostly water, just a little simple green dribbled in
I have a big ultrasonic cleaner. It'll fit a Dominator disassembled. Had it a few years now. So far, I've tried everything in it under the sun and it won't clean ****. Pisses me off even postin about it.
