i have a pair of 1977 suzuki gs 550 one was completely restored a while ago but then droped so it is i great shape except the tank has a dent in it. the other one needs the carbs adjusted and i was just wondering if anyone might know what they are supposed to be calibrated to( how many turns the air/ gas screw is supposed to be. if anybody out there could tell me that would be great. these bikes are also for sale if interested. thanks