Quote:needle, control of flow thru midrange
First off this statement is wrong. Your seeing it as your rev range. Thats wrong. When it says idle thru 1/4 and mid range. Its not talking about your rpm. Its talking about throttle opening. The idle circuit/jet is controlling idle thru 1/4 throttle opening. The needle controls with some overlap 1/4 to almost full throttle, throttle opening. Then the main jet controls Wide open throttle.
Are you getting it. Adjust your needle if your rich at your mid throttle opening.