So I was looking to rebuild my motorcycle carburetors all was going well.instead of taking the traditional route and using a degreaser can and letting them sit in there I opted for a sonic cleaner and used super clean detergent. when I took the carburetor out of the machine there was tons of white foam on it so I then put it in The can of gunk carburetor parts cleaner and this is the end result. I don’t know what to make of this black stuff won’t wipe off and is all over my hands when handling the carb