1993 XP sputters from the start somtimes??

[jarin12ga]

When I first start it, it seems fine then after it gets hot, it will bog or sputter a little, till I give it enough gas! Mostly it was fine yesterday but I'm guessing it needs a carb cleaning? The Gas had a tank of last years gas with stable additive. So I thought fresh gas would help and it did, with fresh plugs!! Ran great 99% percent of the day. From what I said, what do you guy's think??Out of the water starts are fine, It seems like it happens a little after it warms up!!