"William, there are two adjust
"William, there are two adjustments on the carbs that will affect the idle.
One will change the idle speed the second will change the air/fuel mixture.
Your's being a twin carb set-up will also have linkages between the carbs.
Your best bet is to pick up a maintenace/repair manual for your motor. Setting the carbs is not very complicated, but you shouldn't go near any motor with a screwdriver without having something to refer to.
It is alot easier for someone on the board here to help you out with a step that you are having trouble with - near impossible to give you a complete step by step as to how to set/sync a multi-carb setup..."