When it's at 1100 is that on the fast idle cam?
Or is that on the curb-idle screw?
Did you do anything else besides replace the shaft and rebuild the carb?
Did you figure out why the shaft broke?
Shaft broke due to one of the hold down bolts coming loose and since shaft is hardened steal, it broke instead of flexing. The carb is a Pro Comp with idle screw turned to where there is no opening of butterflies.
