ill try to explain. there is a metal pin that is in the center of the plastic throttle thing inside the controller. it moved out slightly and began to snag on the plastic thing on the rudder, which limited the throttle stick movement. i opened the radio, pushed the pin back in the hole, and hoped it would not happen again. it happened once more, but i pushed the pin in farther this time and it seems to be working. its just weird that it happened without dropping the tx or banging it against something. i thought about putting a little glue in it to hold the pin there, but i thought again and didnt do it. im thinking its because of the temperature changing after leaving the radio in my garage, then putting it in the warm house. btw, is it safe to leave a radio in a cold garage?