Does anyone know how to disengage the brake lock on a "99" 763F so we can get this machine off the hill and on a trailer? The lift and bucket will move; only can rock the bobcat back and forth. Too much pressure on the handles and it immmediately locks. The BICS has a flashing green light on the traction; all others are solid. Is the electrical solenoid the main problem or does another component energize it to unlock? No problem over last 2 weeks but I noticed sometimes I had to rock before it would move. You could always feel/hear over-ride button click but now it is dead.