If you have to crack the top off the carb just be gentle so not to rip the gasket.
Pull the float hinge pins and lift the needle out of the way. Then with the fuel line disconnected you can try just reverse flushing the seat ports with a can of carb cleaner with the straw attachment. Protect your eyes when squirting that stuff.
Flush em good so the carb cleaner juice flows out of the fuel line hook up.
Then stick it back together gently and carefully. Don't force or bend anything.
