Wondering what others have used for 4 wheel alignment. I would prefer to do it myself, as most shops are probably not going to do it right. I've looked at Tenhulzen's 4 wheel alignment system and, while it's complete and seems quicker than a true DIY system, I'm concerned it might be a bit flimsy. I don't see another system that's this complete. Longacre and Quicktrick have systems for camber/caster and toe-in but they're just 2 wheel systems. Any thoughts or experience with any of these (or other) products?