Cleaned it all out. Yes, the needle was a bit gunked. I was also suspicious of the c-clip that holds the float assembly in place. Seems like the float was getting hung up sometimes because the clip had a poor fit. I reshaped it, closed it up, and manipulated the float with a screwdriver through the fuel inlet, just to ensure it was moving freely. All went well on the next start up and shut down. The 2 Bbl might have more life! Thanks!