I have a '54 Ford Mainline Tudor "P Code" Police car with the original 256 and Tea Pot Carburetor.  The engine idles very smoothly but completely "craps out" or stumbles when the accelerator is applied.  It is not the accelerator pump as I can see that it pumps gas out of the brass tubes when depressed.  Also, the hesitation is not just brief  (as is usually the case with a bad accelerator pump) but instead struggles to keep running and pretty much dies as soon as the accelerator is depressed.  I know for sure that the problem is the carburetor as I switched it with a good tea pot from another car and the engine ran fine.  I put the problem tea pot on the other engine and it stumbled just like the other one when equipped with that carburetor.  I want to keep the car original so I need to fix the tea pot.  Anyone have any ideas as to what is wrong with this tea pot short of sending it out for a total rebuild?  The problem carburetor looks clean like it was rebuilt at some point before I got it.  Thanks, Alan S. Freeman