/diy/ - Do It Yourself

So my truck has had this retarded alignment problem where it veers to one side. Driving down the road I have to keep the steering wheel at 15 degrees to the left to get it to drive straight. Yesterday I think I figured out the problem. A previous owner replaced the passenger side leaf spring with something completely different. The passenger side of the car is higher than the driver side. If I park on level concrete and place a spirit level on various flat surfaces in the car, it leans towards the driver side. For some reason I have to steer 15 degrees towards the passenger side though, the opposite of what I would expect