One of my new Lehigh Valley C420s, RN 414, will not program in or run. I knew I was in trouble when the engine stated up on its own before I programed it in. Engine is running with the marker lights on, but will not move. I do not believe it actually programmed in, as there was no beep when I hit the set button. Any suggestions? BTW, I had no issues with the other C420, RN 415. Thanks.