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Any tool to adjust the air/fuel screw on a 125

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Has anyone found/made a tool to adjust the air/fuel screw on a DRZ 125 while the carb is installed and the bike running?

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You have to drill out the cover over the mixture screw with a 1/8" drill bit then use something like a drywall screw to pull the plug out. Then you can access the mixture screw.

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I understand removing the plug, but there is very little room between the carb, cylinder, and crankcase. I'm wondering if anyone has made/bought a screwdriver small enough to adjust the screw while the carb is mounted on the motor so adjustments can be made with the motor running. That way the air/fuel screw can be adjusted until the motor reaches it's highest rpm, indicating that your air/fuel ratio is correct

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The factory mixture screw is on the left hand side, not the bottom. Which carb are you running?

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Here's some pics of the carb.. On the left side towards at the bottom is the bowl drain screw.  There is a brass screw above which I assume is the idle/slide stop screw.  Towards the front of the carb in front of the bowl drain screw you can see a forged cylindrical column.  Inside that column is a screw that seams to be the air/fuel screw.  There is also one picture of the right side of the carb.  There is one brass screw to the left of the choke/starter circuit.  Haven't fooled with it yet, but somebody has!

 

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