Silver mikuni 46mm without idle adjustment screw???

I just bought a blaster that has a silver mikuni 46mm carb. The carb does not have a idle butterfly adjustment. Therefore its very hard to get to idle. Am i missing something here. I can get the ski the idle by adjusting the throttle cable but then it effects the wide open position. Its look like it was taking off. Has anyone heard of this. Why would someone take this off?
thanks
 

Shonuff

I've got the glow
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Location
Memphis
Adjust your idle at your steering cable mount on the intake manifold or at the throttle mount.
 
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