I am using an after market TX which is 8 channels but unfortunatelly I do not have a potentiometer on it. I've recently installed a Zenmuse. I am looking into the posibility to control the tilt preferibly with left or right trim to have a digital control, or control the tilt with a three position swithch (down, middle, up for instance) Has anybody succeed on that. I am having difficulties to assign the right values, for the time been trim seems not to work, I get even with the trim jsut two positions: veriy high up and completly down, not intermediate values. Any feedback is appreciated..