[boyt911sc]

Thunder,

If I understood your post correctly, the 3-mm Allen fuel mixture adjuster screw is missing? Could you poke through the hole and pass through the arm/lever? I am having a difficult time visualizing your problem. Even with the absence of the 3-mm Allen screw, there is a plug at the bottom side of the lever unless this was also removed. Anyway, to install this 3-mm Allen screw, you need to disassemble the sensor plate assembly's lever or arm and the air flow metering unit has to come off the engine.

Could you test it by threading a straight piece of wire to the hole all the way to the bottom of the airbox? I doubt the the screw is missing (?). Keep us posted.

Tony