You should rotate your highback's so they are parallel to the heel edge of your board. However i don't see how doing so would help your issue with not being able to ride in a straight line. It could be a technique, setup or just equipment issue and without any more info besides it turns toeside we can't really help you out.
2011 Ride DH2 159 Wide - 2009 Burton Missions
2009 Burton Bullet 160 Wide
Riding Days: 81