[derbydave]

The pilot circuit needs at the very least to be cleaned and have a new O-Ring installed. If you bought a carb kit it probably came with a tiny O-ring. That one is for the pilot. There is a brass plug on the underside of the front of the carb that needs to be carefully drilled out to access the pilot circuit. The plug (see pic) is only about 1/8" thick and under it is the pilot screw. Drill too far and you can damage the screw. After the plug is out unscrew the pilot needle and clean everything taking care not to damage the needle or spring. Screw in the pilot needle gently until it bottoms and then back it out 2 1/2 turns. Adjust further from there based on how it runs. No need to replace the plug