if it runs better with the choke on after it warms up, it indicates you do have a lack of fuel. on these carbs the choke limits the air. less air requires less fuel. if it runs better that way then you know for sure it is running too lean (ie. plugged up somewhere) with choke off.
if there is no difference then you more than likely have a rich condition. bad float valve or float. the float on these bikes is made of plastic and they do get wore out and cause it to run rich
Trikes: All Honda: 84 250r, 85 86 and 87 250sx, 84 and 85 125m, 79 82 84 and 85 110's, 73 us 90 and 77 atc90, 75 atc70
Cycles: Honda: 71 cb100, 78 cb750 coming soon cb750 trike. Yamaha: 67 yds 3 (250cc, 2cyl, 2 stroke), 82 750 SECA
Other toys: Chenoweth VW sandrail dune buggy, old race go kart, racing mower, 76 Arctic Cat Pantera 440 snowmobile
KEEP IT ON ALL 3 OR AT LEAST 2 AT A TIME