idles fine but boggs when gassed

so i had the grizzly 660 sitting in the garage for a couple months due to minor problems like the starter going bad and i finally took it out, replaced the starter, battery and relay. start it up runs great, rode it for about 10 minutes around the block. same thing the next day and it ran great. i decide i wanna trade it for a 450 race quad so i bring it to someone’s house to trade. as soon as they get on it, it’s starts bogging down. i thought it may be low on fuel, so i look and it was, but also had a lot of **** in the tank. i bring it home clean out the tank clean off the filters at the bottom because they were covered with ****. put the tank back on same thing. i figured it’s the carb, take the carb out took all the jets, float, needles out sprayed them all down, stuck a needle through each jet, and to me the carb didn’t seem dirty at all except one jet did seem a little clogged. put it back togather and it still boggs down everytime i give it gas. now i checked the oil, and what do you know i’m missing a little, filled it back up with only about half a quart of 10w-40. any ideas?

idles fine but boggs when gassed

so i had the grizzly 660 sitting in the garage for a couple months due to minor problems like the starter going bad and i finally took it out, replaced the starter, battery and relay. start it up runs great, rode it for about 10 minutes around the block. same thing the next day and it ran great. i decide i wanna trade it for a 450 race quad so i bring it to someone’s house to trade. as soon as they get on it, it’s starts bogging down. i thought it may be low on fuel, so i look and it was, but also had a lot of **** in the tank. i bring it home clean out the tank clean off the filters at the bottom because they were covered with ****. put the tank back on same thing. i figured it’s the carb, take the carb out took all the jets, float, needles out sprayed them all down, stuck a needle through each jet, and to me the carb didn’t seem dirty at all except one jet did seem a little clogged. put it back togather and it still boggs down everytime i give it gas. now i checked the oil, and what do you know i’m missing a little, filled it back up with only about half a quart of 10w-40. any ideas?