Jetting here is not the issue, there is only 2 things that controls the level of fuel in the bowl & that's the float valve & float. Something is not right, adjustment height should be 16mm or 5/8 of an inch, either floats have moisture in them or have a tight spot not allowing the valve to close fully, faulty valves, some crap stuck in the seat not letting the valve seal properly. What ever it is that where I would be looking.
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