I was attempting to do a vertical move with my F55 on the Cineslider w/ oracle controller and 500 series motor. The camera was mounted on the Kessler low-profile ball head and 90º camera plate. The camera was in a lightweight configuration with no EVF, a Canon 24-70mm 2.8 L, and a 1lb Sony BP-GL95 battery. The whole thing was well under 10lbs. Unfortunately, the slider couldn't perform the move. The belt would skip teeth and/or the whole thing would slide down uncontrollably. Ultimately, the belt became very loose and I gave up. Does this exceed the vertical carrying capacity of the slider? I've had very little issue doing this with a 1DC, but I was really hoping to be able to pull off these vertical moves with my 55 too.