I am now riding my 4th Goldwing, and on a recent trip I backed my bike into a parking space using reverse. I have known for years the bike would not move while in reverse unless you pressed the reverse switch. This time I was on a slight slope and that's when it hit me "parking brake". It can also be a theft deterrent since you can't move it. Does anyone know if any harm can be done by leaving the bike in reverse?