So since I got my lovely set of track wheels/tires I have been using the between stupid and monumentally stupid method of using my emergence jack to change at the track. So after being chewed out I feel the need to get a jack. However looking around they all seem to be crap or really expensive. All I need to do is jack up a corner at a time and change the tires, nothing more. So what would you guy's recommendation be for a jack?