I go to feed the cows a bale of hay and the machine locks up! Nothing will unlock! I go through the normal procedure...park switch on, put seatbelt on, start machine, but wont unlock. Noticed that before I put seatbelt on that the seatbelt light was off and when i put it on the light comes on??? Is it not supposed to be the other way? I have power to the seatbelt and seat switch. jumped both of them and light still comes on?? Said what the heck and spent $60 on new park brake switch and still nothing. Boom and bucket wont even do anything. Did notice that even though everything is locked up, the left side drive seems to not be locked up. What the heck is going on?