I'm just through my first winter with my 22. I used the Wallas constantly, since i keep the boat in a slip, and use it a lot...often i just drive down to the boat, kick on the Wallas, and hang out there..The Wallas has been trouble free, and i like the Klean Heat. For me , after reading all the threads..i keep the fuel topped off, burn it at high when starting and when cooling down. I've had no maintenance problems, though if i do, i'd be lost as to what to do. But, so far, so good.
tom/terraplane