Warrior sputtering when holding throttle in one position?

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Ok update I have gotten rid of the smoke problem but I still have the stutter I put in a new plug. It almost acts as if its getting to much fuel but there's no smoke comming out of the exhaust. Any ideas would be greatly appreciated thanks in advanced
 
It sputters more as it gets warmer. So far new rings, top end gaskets, stator rebuilt carb, I've adjusted the valves, with no change would I need to adjust needle and float? I'm at wits end with this thing
 
Stock bore I have needle on the third groove I left the float alone how do I check where it needs to be and how to adjust it to where it needs to be?
 
how to set height,take off bowl, invert carb and measure from bowl surface to top ( actually bottom) of float. Bend tang to adjust. .45-.53 inch or 11.4-13.4 mm
 
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