Just purchased Branson 2515H. After using tractor for four hours, I started it next day and blue smoke belched out and engine knocked. It cleared up but I could still hear a tick and light knocking. I called dealer. They said it was a warranty issue and would not just give me a new tractor. The tractor is only four hours old. They picked it up for repair two days ago. Haven't heard anything from them . The Branson dealer in Jackson. Michigan. My position is I'm entitled to new tractor, not a fixed tractor with maybe a new engine. Anyone know my rights in this regard?