Hi there i am stuck and need help with my 125. When i start the bike it revs really high between 3-5000 rpm. When i try and put the choke down the bike slowly cuts out. Looked at the carb and i couldn't actually see the idle screw. Its probably there but i don't wanna start playing with screws that could be important. If someone could help me that want be great and would be much appreciated. By the way my apache is a 58 plate if that makes any difference.