Tweak boards w/ scales allow for consistant chassis setup wth some repeatability that can be documented via a number eithers oz. or grams. Most use two scales but I prefer four to calculate cross weight easier.Racing Raider said:How important is have a tweak board for flat/banked track racing? Is there a big difference between have a board with two scales other than 4 scales? Which one is perfered? Any companies that make one or is it better to just make one yourself?