I took the truck in to be fixed this morning. Got in at about 8am and got it back at around 10am. Apparantly the Upper Arm Assembly on the Driver's Side was loose and needed to be tightened. So now there is no knocking or thuding anymore and it doesn't switch which direction it wants to drift. Now it just drifts left. Yeah, I know, that's not good either. But the people at the Service Department knew they were giving it back to me that way. Cause the apparantly didn't have anyone who could do the alignment on it today. So I'm rescheduled for Monday morning now to get that fixed. Then it will finally be all done at the Service Department....for now... :)