I have a troy bilt pony riding mower about 5 years old. The mower won't start, I put it in neutral and tried to move it and it wouldn't go anywhere. It acts like it is in gear all the time, it has to be in neutral to start. I jacked it up and I can spin the wheel with my hand, but the other wheel turns the opposite direction, hence it won't move. I could use some ideas and advice. Thanks.