I was looking at it last night, and its a wiper type switch. Similar to a rotary potentiometer with its wiper, only in this case it has a wiper that can touch one of two separate metallic segments on a round disc. If they send me a new transmitter, that should fix it. If not, I'll see if I can unplug the individual wire from a multiwire plug that goes onto the transmitters circuit board. I can't see how the wiper could touch the fire segment if the stick is down and touching the opposite elevation segment, but its hard to see what's on the backside of that disc, you can only see one surface that has the wiper. The back side must have conductors as well, because I can't see the wires attaching anywhere but on the back.