I didn't have any Kroil, and not sure if my concoction (above) did it or the acetone/tranny fluid? But I'll have to guess it was the latter. Because I tried breaking it free using a 20v impact driver (Dewalt DCF887) after the concoction sat for 3 days in the barrel.
So I poured that stuff out, then poured some cheap tranny fluid and about the same amount in acetone down the barrel, swished it around to mix it, and let it sit for 2 days. I hit it last night with the Dewalt, it grunted a sec, then spun the plug right on out.
