[jmeckel]

On the vitron tip valve, if you pushed it shut with much more force than tbe float uses you can harm it. Also a very good way to clean all the passageways is to use a glass bead blaster, then chase every passage way with a small wire tip cleaner. You would be amazed at the amount of rust, old lead from the old gas, and general dirt I have removed from a carb that was chemical boiled and cleaned before it was sent to me.