Dave, thanks for the information. If you and I both loaded our truck beds and headed up a mountain, we may be able to tell a difference. I don't know about you but my bed has as good paint job.
While Carbking is here, I have a nagging concern about the automatic choke design that Carter uses on the YF-3211s and other models. The reason for the question is for longevity of the carburetor.
The heat needed to affect the choke coil is currently pulled off/from the manifold choke stove, through a sleeve covered inlet tube, by a slight amount of vacuum supplied from the internal carburetor passage, through the choke housing. Keeping the choke housing clean inside is a problem? I've never had one open for inspection hence the question. I prefer a manual choke but sometimes the manual carburetors are simply no longer available to purchase.
I've notice that, on the Carter WA-1 carburetors, a similar design and uses a fine mesh screen to block contaminates but the screen eventually becomes blinded (tiny cast iron flakes, dust, oil mist, road grime) and the choke fails to work properly. Wouldn't a better design have a filtered inlet (air cleaner maybe) and run it through a coiled tube around/near the manifold and on to the carburetor choke housing?
