So reread this thread, I will assemble the bowl and airhorn without the gasket, (that I wish was a bit thicker) to better check for warpage. So I did the vacuum check on the power piston with the pump system, it takes 7" to hold it all the way to the stop. So far I have not found a reason for this to run fat. One day it sort of ran okay and the next it would barely run. Hmmm the person that owns the truck said the gas is good?
It looks to me that fuel level of a 1/2 inch or more is needed to fill the accelerator pump? I have also vacuum checked the gallery that runs down to the throttle body or base that feeds the power piston, it checked great no leaks. So again I'll make sure the float settings to the book, and make sure the mounting gasket is all good and no warpage there.
