I am going to have to fully agree with Ken on this one, your instructor has the plane trimmed to fly the way he likes it. He may have to do some slight trim adjustment to counter the sliders being knocked around during transport, but next time you go up it should only take him a second to trim it out. However if you go in and make any adjustments and they are not right you may be looking at the entire beginning of your next flying session spent retrimming the plane.