Steering All Over the Place at 55mph+

If you have a fairly flat floor to work on you can use a framing square against the tire to measure camber. If you are at approximately zero camber the square will cntact the top of the tire and the bottom at the same time. If the square contacts the bottom and there is a gap at the top you have negitive camber. I would measure your current camber and record it. Also mark you cam bolt positions with a paint stick or sharpie before you start moving them.