right now the car has been off for a day or so ,, when i put the spring [censored], in there i need to turn it slowly causing the butter fly flap to close, i would say there is a measurement there that needs to be between the flap and housing ??? i didnt see that in shop manual

thanks


1958 chevy biscayne
235 6 cyl 1 barrel
2 speed PG tranny