Rear axle should be aligned correctly if the center spring bolt is in the centering hole on the axle. To align the front end use a tape measure and measure distance between inside side wall of tires. This should be done half way up the side of the tire . Measure distance in front of axle and behind axle. On a Star Car set the front distance 1/8" toe in to 1/8 " toe out. Zero would be ideal. I have had to set some carts to 1/4" toe out to stop the hunting or darting about feel because of tire type but most carts work just fine in spec.