Servus people, I drive a Zr7 Bj 1999, in possession since September 2010. – 2011 the valve was set at 36.000km. Everything is fine – in mid 2012 I had the valve set at about 49,000km, in the workshop these “spacers” (or plates) were replaced/changed… however. Anyway, I have the feeling that the valves are very clattering, especially on the left. I imagine that it was not like that before (or quite before when buying). You can hear correctly, I don’t miss oil, but it’s old. Must be changed. Whether it’s because of it? The workshop type said it’s normal, because the valves now have a “game”. But the clacking is quite strong… Is that more normal or should I worry about it? greetings and a nice start to the season I wish all PS: I bought the machine with 24,000km, now there are 51,000km druff