Carb float height

[unfazed]

No air leaks ta all,carb inlets are new.
Pilot screw adjusted,by ear and even with cylinder tacho but nothing change.
Carb cleaned 3 times.They are in mint condition now..except one pilot screw i manage to snap... :rolleyes
The only thing i havent adjust was the float heights....and maybe i souldnt.... :b
Plugs and plugs caps replaced,first and secong coil resitance checked,tps resistance checked.
K&n air filter super clean and oiled.Carbs synced.....and everything i read that might cause the problem.....
Now i have one extra problem to solve.....
I am thinking of buying some spare carbs.... :rolleyes
Two mechanics have check my bike,without solution.. :evil

You cannot adjust the air screws by ear. It can only be adjusted by a CO meter pluged into the bolt holes in the downpipes.
I would advise you to set them all to 2 turns out.
A common problem I have come accross is people setting the Pilot screws wrong.
The confusion stems from the fact that all the Box Eye models are 2 turns out and the Fox Eye models are 2.5 turns out.
A reason I have come accross for running badly to 3k is sticking choke plungers or cracked plunger rubbers.
Ensure the choke bar is moving freely and all the plungers are returning fully.
I have never seen a float height change with out somebody doing it accidently when cleaning the carbs
The rubber caps on the vacuum take off points can crack through much quicker than the intake rubbers ever will and should be checked regularily.
I presume you have checked the valve clearance ?