I need to get an alingnment done on my 79way cherokee. This is the second one in less than 3 months. The quy at the shop i took it to said there is only one adjustment to be made. Then the other day my buddy was behind me and told me it looked like i was driving sideways. Is the guy atthe shop i took it to full of it or just doesn't know what he is talking about. How many adjustments should be getting made?