I met another R18 rider here in the Netherlands at an event today. What I saw was that there was a difference between the same engines and I then went to look for whether this was an option if you buy the engine but what turns out it is not, there are then 2 versions of the engine made? It concerns the steering damper on my R18, it is present but not on the other. The jiffy's are also different, just look at the pictures. Can someone explain that?