[68gmsee]

If the linkages are not binding somewhere, try moving the throttle by hand slowly while looking into the throttle body to see if the butterflies are sticking. It may be gummed up or could be a throttle body butterfly shaft that has a flat spot. Try cleaning first and see what happens.

I had one that no amount of cleaning and spraying kept it from sticking. I even put a stronger spring on it but wound up putting another carb on the engine. If that is your problem, you can have a carburetor shop, repair shop or even a machine shop install shims in it. I'm in the process of trying to find a shop that will do my monojet. May have to bite the bullet and get a shim kit.