Trying to get the idle set and adjust the carb? Rochester Monojet

Idle is set really high and since this is a 3 speed manual stepvan the high idle makes it hard on the non synchro first gear of the transmission.
PO said he purchased a new carb for it and I noticed the stepvan was running funny at idle when I originally took it for the initial test drive.
I have been trying to find the idle circuit mixture screw and I have looked at many many online diagrams but don't see the screw on this carb?
Well, finally figured it out.
PO broke it off in the hole. Nothing sticking out. Was super lucky and was able to get it out by getting a little groove in it (its brass thank god). Then I was able to get a very small screwdriver in the groove to back the brass screw out of the hole.
The screw is sheared in half I can't measure its original length. Therefore, I don't know which new one would be the right one for this carb. Apparently there are two possibilities according to Mikes carburetor parts? Ordered them both and they should be here by the end of the week.
Hopefully, one of them will be right and I can get it all tuned for idle and go for a test drive-pending my newly found radiator issue.