Help!!!1968 6cyl w/New exhaust manifold and rebuilt carb. Runs like crap

[RED72blazer]

So I have a 1968 c10 with a 250 straight six and a monojet carb. It has 86,000 on it and is a very original truck. I recently replaced the exhaust manifold and rebuilt the carb. The truck ran VERY well before any of this, except One major problem with it was that the original exhaust manifold was warped and wouldn't seal. It had a horrible exhaust leak. ordered a replacement manifold(very nice quality btw)but it doesn't have the heat riser valve. While I had everything apart I had the carb rebuilt. It wasn't having any problems, but I wanted to prevent anything from going bad and leaving me stranded. I had this done by a shop I have had do at least 10 other carbs for me. I have never had a problem before with their work.

So now with everything back together the truck is whisper quiet, which is awesome. I have the idle screw all the way out, but it won't idle below 800-850 rpm. When you pull out the choke cable the truck starts to stumble and will die. it will also blow a lot of black smoke. If you look down the throat after doing this there is condensation on the throttle blade. If you get the choke cable in fast enough it will stay running but is idling at 1000-1100 rpm and will blow black smoke for a second or two. I can go under the hood and pull back the choke linkage and it will return to idle. If I change the choke linkage around. I can get the truck to idle at 600rpm. But the choke still doesn't work and the linkage looks close to binding. I included a picture of a set up similar to how mine is. I just don't have that big thing at the idle screw hole. If I change the choke to the single hole on the bottom arm is how I get it to idle lower than 800.

Any ideas? I've checked for vacuum leaks and haven't found any. I am going to drive the truck up to the carb shop tomorrow and have them take a look. I am worried that the choke doesn't work because of the lack of heat plate in the manifold. Or maybe they assembled things wrong. or????

thanks for any help.