here is the tips from insect skateboard... meaby it will help some other newbies

There is not really a "standard" setup for riser pads on a slalom board. Everyone seems to have their own favorite way of doing it. But... I can tell you a very good place to start. This was recommended to me by Gary Fluitt (of Splitfire Trucks) and it works extremely well. For the front Tracker RT-X, use two Khiro 10º wedges. This sets the front truck at a 20º angle. For the rear truck, use a 1/2" (12mm) flat riser, or one with a very small angle wedged forward. This rear truck setup is for a Tracker RT-S, but should work well with your Airflow or any other rear truck.
This may not be the perfect setup for you, but it does work very well and is a great way to start. You can always modify it later if you want to.
Steve