I think my rig is havin difficulties!

Well I was riding my 4wheeler this afternoon and I popped it up to ride a wheelie and once the tires got about 3ft off the ground it just kinda sputtered out kinda like it flooded! I also noticed the it was harder to crank when I started it....I checked the air box and it had gas in it...a pretty good bit acually! What do yall think that is wrong float stuck, flooding, ect? I think I am gunna take the carb off this afternoon and clean it good and see what that does!! Any input will be appreciated!