The large rudder on the KC-135 could have a great impact on the flight path. It has a large range of movement and, when in the high range of hydraulic assist, it can reach full deflection very quickly. My first Instructor at Castle AFB in 1970 always taught us to "paint" the rudder as required. I was always amazed on preflight when guys would slam it full left and right during the check. 20 years and 6,000 hours in the airplane and I was still a "painter".