I remeber reading on the forums that gas milage and power increased on the Burgman 400 after the first service. I was talking to another rider that had his 400 serviced at the same dealer and commented that mileage dropped after the first service. I had noticed the same thing too also with a decrease in performance. I thought it might be I had just gotten used to the bike and had started to ride more aggressive. Now I'm thinking the dealers service department might have caused it. Has anyone else noticed the same effect after first service?