[jmeckel]

I hand clean the passageways with a gas welding tip cleaner wire of the right size. I clean every passageway I can get a wire through. I then glass bead blast and follow this with a soak in chemical carb "boiling" tank, then blow it all out and run the tip cleaning wires through all of the passageways. I have rebuilt a lot of carbs and never had one yet that I could not get all passageways open.