When tracking down the straightaway, the tires (with toe out) will fight to give you MORE toe out. When you enter a turn, the outside tire will decrease toe because it pushes the leading edge in as more weight is transferred toward the front of the tire. The inside tire will produce more toe out for the same reason. You'll just have to play with the setup and find what works best for you. I would say that if you're looking for toe out though, push the front of the tire IN while you measure it. This will give you the most accurate toe in the corners (where you want it).
Team EAM // Gravity RC