We have 6 ETC Revolutions which sit over the audience, when I set it to auto move you hear the scroller motors speed up and stop and then reverse direction. Does anyone know how to dampen the noise while still retaining the distance that the scroller moves? My original thought was to slow down the auto move but I can't find the speed for auto move in Congo. Ant one know where it is, or has a better way of solving our problem?