I while back I acquired a '28 Ford roadster with a fresh 283 and three twos backed by a TH350. It seemed to run OK but not quite "right". It almost always needed to be choked to start, pumping the gas pedal didn't seem to do much. Lots of cars have starting quirks so I ignored it as long as it ran fine. Well, the other day it didn't run fine. The plugs were wet with fuel. Turns out the acceleration pump in the center carb wasn't working and the front carb was leaking into the manifold. The Problem; The front carb just had the proverbial booger in the needle and seat - done. But when I opened the center carb everything looked perfect. So I blew out everything and started to reassemble it. The pump would move but still no squirt. The override spring was taking up the motion and the seal wouldn't move. So I swapped the spring with another - same thing. The TIP: The bore showed slight corrosion so I polished it with some Mother's Metal polish. The plunger now descends like it should and it squirts fine. I thought I'd pass along the tip that even a little corrosion can stop the pump from working like it should with the blue plunger seal they supply now days. Now for the question: When I pulled the booster venturi assembly out to clean everything I noticed that the emulsion sleeves that drop into the carb body and surround the emulsion tubes were missing. It seemed to run OK without them but I scrounged up a set and installed them. What do they do and can they be left out? Are they present in all 2GCs or just certain models? The engine is back running well again, the idle is consistent but I have a little off-idle hesitation that I need to work on. Anyone have any thoughts or wisdom?