Today the left wheel started stopping, going forward or backward, just out of the blue instant brakes. Go back and forth, and it would stop. I parked it and noticed that the brake on the left side is not working at all. I have a ton of work tomorrow and Whitleys is closed on Monday so it will be Tuesday before they are able to look at it. Any ideas what may cause this?? All linkages look good, I am going to take the tire off tomorrow and have a look.