rejet. the air screw only affects it between 0 and about 30. you are running too lean on the higher end. put one size bigger jets in it then what you got at this time. you can turn in (less air) or turn out (more air) the screw if it bogs on the low end when you gun it. do 1/4 turn at a time in or out depending untill the problem gets better, then go one more 1/4 turn. if it starts to get worse again, go back 1/4 turn and you will be at the happy spot
well i was looking at the carbs last night and noticed that they were'nt even pushed in to the air box. I got them put back in the right way and adjusted the air screw and now it runs great and i checked the plugs and they were a medium brown.