Hi, I'm having problems getting the 216 on my 1948 Chevy 3800 (1 ton) to run. When I got the truck it ran, but the carb leaked like crazy out of the accelerator pump, so I threw a rebuild kit and new floats in it. For some reason I just cannot get it to run. It has to have the choke 3/4 closed and the rpm's cranked up, otherwise it just dies. If I back the idle adjust screw to the point of having slop in the throttle blade It will sit and barely run if I'm lucky, eventually dying. As soon as you think about giving it a crack it just dies. The timing has not changed since I got it, advance is working, and I have good spark. The fuel pump got replaced also, and I have confirmed that it is working. I've tried moving the idle mix screw in and out (starting at 1.5 turns out) and it doesn't seem to care what you do to it. I even tried raising the float position a bit to no effect. I have had it apart multiple times now and cannot figure out what is going on with it. Does anybody have any suggestions or thoughts? Thanks.