James suggestion will probably work as well. Personally, i'd just flop the thing around and give it a slight tweak with your hands. Then adjust the screw for tension. I know you will need a slight bit of lubrication on there to keep the thing moving smoothly, not wd-40 or something like that either. Dries up fast and in a day the left stick will feel sticky, not good when you are trying to make small movements. Vaseline /electric grease seems to work good for that.