Vm float height guage and testing

Noidea

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Drill and tapped an extra drain plug i had for vm carbs and threaded a barb with teflon tape to make my fuel guage to make sure floats are at correct height on my vm carbs.

My concerns are for when bike is running straight up vs on kickstand the reading i have (1st image) for left side carb with kickstand is 2mm below the top Of the bowl.
Than when the bike is centered it seems lower than it should be. (2nd image)

But if i make it 2mm below surface when its standing that would cause over overflow when im on kickstand correct?

Heres the right side with same set up kick stand and centered

My floats are at lowest setting 22mm.

Im doing this cause at idle i have some intermittent issues with carb popping and rough idle.

I also received glue in vacuum barbs from 650 central gonna drill vms and install accordingly so i can use a vacuum gauge or manometer to see what i got going on. Get a better idea of why running so oddly.
 

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Fuel is picked up from the center of the carburetor. The fuel level there dosen't change much, as the bike is leaned to one side or the other.
To get an accurate fuel level reading from the side of the carburetor, the carburetor must be level.
 
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