I have a grasshopper with 760 hours on it. Since march of this year I've gone through 4 hydro hoses. Each one of the 4 going from the pump to the wheel have gotten a small hole in them. I've just been mowin along and all of a sudden I lose power to one of my wheels? Any one else have this problem? Is it something I could be doing wrong? The mower is kept in a garage. It's very irritating.