The easiest way is to get a sync tool jeff at f.a.s.t. sells them (site sponcer), hold the throttle at WOT whith then engine off, and look at the side of your carb there should be a site hole, its a little small window, now on your slide you should have a little hole in it the hole in the slide should line up with the window when you hold it at WOT. Just adjust your cable on the carb that is off or both if they are both off, im sure someone else can exlpaine it better.