Just did this last night. It was on a spoon venturi TB.
However when I achieved 4.5v at WOT and 0.48 at CT, my butterfly gets stuck when closed?
gave it a good clean with throttle body cleaner suspecting carbon build up but it still gets stuck.
Its almost like I have to kick the accelerator pedal to open the throttle.

Another thing I noticed was that if I set the throttle cable tension so that it is WOT when the pedal hits the floor, I get alot of slack at CT.
Is it okay to have the throttle rotor hit WOT before the accelerator pedal hits the floor?