[kccats]

Regardless of your measurement on float height.
Go back to your stock needle and seat, that one is too tall and likely wont open
Do this, put a piece of fuel line on carb inlet, with bowl off just blow into hose and then raise the float till you can not pass air. At this point the float should be 'Level' with carb body!

 

[kccats]

OMG just set your floats!

 

[kccats]

As long as it does indeed shut off as it becomes level and when dropped it passes

 

[kccats]

Soak both carbs!
Your belt is loose it is not riding out of secondary, check your Center to center (12 1/4")

 

[kccats]

Tape measure!
Also I use a carpenters square
If anything you will want the clutch side to be just forward of square to secondary
This way under load it Will be square