Hi. New here and really struggling w/ my z915b. It only has 152 hrs on it, but withing the last year it has refused to start after it is hot (after running for about 30 min to an hour). I talked w/ my local dealership and they said they had never heard of this problem. After cooling off for several hours (meaning 3 or more), it will turn over, crank and run w/ no problems. Does anyone know what is causing this and how to fix it?