just to check that i am measureing them correctly.

carbs off float chamber unscrewed, hold carbs upside down so the floats hang, and then measure to the end of the float from the flat where the float chamber screws on.
i have noticed if you set the above to 13mm it doesnt seem to open the rubber tipped valve enough. or does it

is that right or is that how you measure you "fuel" height

how do you measure your float heights
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MC21SP - Roth-tax
CBR400 - track
MC21R - sold
MC21SP - sold