Hello dear screwdriver. I drive an Alpha Motors Mustang 125. I am actually very satisfied and drove from October to mid-December 2000 km. According to Service Heft all 2500 km the valves should be adjusted and the V-belt changed (rolling too). That seems to me quite little (2500 km). At Piaggio were all 12000! I would like to leave the belt 5000 inside u 1X a year change. At the Veñtiles there was nothing to get in after 2500 km. Have only oil u Get rubbed oil changed. Who has experience with the Chinaböller? Lgr Andreas