I have and edlebrock 1406 and it sticks when its closed. but once you pull it off idle it will be fine as long as you always have a little pressure on the throttle. Its almost like the butterfly's are dirty and sticking but they dont look very dirty. What else could cause this?

Worn throttle shafts?

is there a way to tell for sure?

Does it stick when the engine is off? Is there any play in the shafts?

it does stick when the engine is off and i will check the play in the shafts. Are you able to buy new shafts?

You can replace the shafts and bush the body, but it's a bit of work.

there is some play not alot im gonna take it off and make sure its super clean before i go any farther.

i got it figured out now found a piece of the linkage that was bent and causing it. Might of happened during shipping not sure.