My downtown has 28,000 km. on it, I have not touched the moter yet, still runs great in the summer, but in the cold it is harder to start, I read in the other forum that it could be the valves are not right, so my garage is not heated, and the temp. is near freezing on the nice days, is it a good idea to adjust valves at that temp. , thanks for any advise, and a Merry Xmas to all, joe