Hey guys. I have a question about my fathers ls180. I was using it one day at my house pushing some rocks and small trees in piles. I was push some of the rocks when I caught one of them that was stuck in the ground. When I hit it it killed the machine and threw me forward. When I tried to start the machine it was as if the right pump was still engaged and as you would crank it over the machine would move forward and wouldnt start. The only way we could start it was jack the right side of the machine up so the tires were off the ground. Ever since this happened we have trouble with it. It seems if you kill the machine while pushing the right control arm forward it causes this. Is there a valve of some sort that could be broke? We have 5 othe new hollands and have never had this problem.