AFB idle mixture screws

[Vitamin c]

Looking for a replacement idle mixture screw for an AFB from a 68 Hemi. Carb # is 4431S It has a taper or step to it, and I do have a parts AFB that has a very similar screw, but its threaded at the step and will not fit into the carb correctly. The screw I need is on the top and the parts carb screw is on the bottom. Anyone have a used parts source?? or ideas.??

 

[mguner]

Belt sander..... Or chuck it in a drill and use emery cloth on it.

 

[Vitamin c]

yea, ive thought about that. id like to try and locate the correct screw before I try that though