Hello everyone, now I want to perpetuate myself here too ^^ Ride a small but fine ( because my 😛 😀 ) GPZ 305. However, the good has already a few years on the hump. Valves clatter quite neatly and I think the gassers would have needed a setting. Can someone tell me what that costs about? Or can you do it yourself? Thanks already for your help and greeting from FFM! Gacko