Fuel Vaporization Using Eddy Carb -- In-Line Fuel Pump Question

I think I may have found the source of my problem (have to crank up after running a few minutes to get fuel to carb).

So I have the 1406 eddie carb in my 72 cuda with a 318. I have a vacuum canister, but the carb fuel bowl line was never hooked up, because there was no place to hook it to in the carb. Take a look at the eddie pic below. It shows a fuel vapor bowl line near the fuel inlet, but ONLY for the 1400 model. So is that my problem, in that I need to hook that up, but can't with the 1406 model?


Got this info from a book regarding my 72 cuda.

To further reduce evaporative emissions on the 72 E-bodies, Chrysler engineers added a vapor recovery system (charcoal canister) to the fuel system. Engineers maintained fuel system integrity by adding a new pressure-vacuum gas cap to the fuel tank.

Does this info confirm my suspicions, that not having a top mounted fuel vapor return line from the carb to the canister, and the fact I have no vacuum line going to the canister, sound reasonable? I can’t figure out what it all means.