We have two Dingo TX-420 with a Kohler Command V-Twin 20 hp engine that took a dump. Between the leaks and the burning they go through oil faster than you can put it in. One has over a thousand hours on it and the other has over two thousand. All but the engines are salvagable. My question is for anybody that can tell me if we have any alternative to these shoddy Kohler engines? Specifically we've been eyeing up the 24 hp Honda engines, GX670U. Any other engine would be helpful. We'd just like to know more before shelling out a thousand bucks for a new motor that isn't going to work. Any help or direction to help would be greatly appreciated.