Start by making sure the toe links are the same length for both of the fronts and both of the rears. You could use something straight (yard stick, level, 2x4, etc) to place against the sides of the tires going from front to rear and measure the distance from the straight edge to the tire to check toe. If it is touching both sides of the tire, your toe is set at 0. Or you could use a [link=http://www2.towerhobbies.com/cgi-bin/wti0001p?&I=LXKHC3&P=ML]monster camber gauge[/link] to check camber and toe.