Don't cover up existing problems by screwing with the carb. It will just compound your problems. I doubt you washed down the walls so bad that you cashed the rings. I would do a leak down test though. I'm sure one of the guys running a 5/16" fuel line on their drag machine has one lying around you could borrow. Assume you are running a PCV system to keep the crankcase in negative pressure at idle?? Is it working? The idle rpm should drop about 50rpm when you plug it off. How does the breather vent hose look on the inside? Should be dry. If its dripping with oil thats a sign of excessive blow by. So is lots of oil leaks??