does my carb not have air/fuel mixture screws?

just got done cleaning and re-assembling the carb from my '79 KZ650B3. Now that I think about it, i dont remember seeing any air/fuel mixture screws! I remember where they were on my old '77 KZ650, so I looked at the carbs again, and where the mixture screws should be there is only a hole. I can see the bottom of the hole, just looks like a cup. At first I thought maybe its an allen bolt, but its not, just a cylindrical cup in the bottom of the hole.

Supposed to be either a side-located sir screw or a bottom located mixture screw.


Good Fortune!

thanks again patton. I bet mine has the screw on the side.