What to use to clean this carb?
I sometimes save pics like this from online powder coating forums I look at.
Though carbs don't usually apply, the discussion of acids does.
How Not to Strip Magnesium 101:
Some in my industry use this wicked, EPA-controlled chemical called B17 (and improperly used in the pic above). It will actually
boil magnesium. It's the only thing that will remove silicone -- Armor All and tire wet -- from used alloy / aluminum wheels and comes in 55-gallon drums. It will also eat them if left unattended. I absolutely refuse to have it in my shop due to its lethality.
As to the B12, I've used it for decades
@MerlinsMopar. Billy just melted some little aluminum motorcycle carb part in it a few weeks ago; don't forget your stuff is in there.