that problem would be the toe-in, or lack thereof. Basically, all cars generally are set with the front tires VERY slightly angled in towards each other so the vehicle tracks straight down an even road... if there is a zero or negative toe-in than that would be where you are getting the poor tracking problem most likely. It could be worn bushings or other less common causes, but most likely the tow-in. Take it to an alignment shop and have em check it.