Cool. I put on a Evoluzione air filter filter, using the brkt, omitting the top part of the air box. It gives a little extra kick, and you can hear the carbs kick in. Lots of fun. After 1 k miles, I changed the rear oil. At 300, I chg'd the eng oil using Yamalube, then at 1k, I put in Amsoil w/ Lucus additive. With the 10-40, it makes the eng rattle, clutches. Maybe 20-50 wouldn't hurt. I'll do that next year. You may loose a hp or two. Both weights in Amsoil is good protection. Pen and I may try to take a trip on the scooter in a couple three weeks. Will see what happens. Have fun and will catch up with ya maybe next month or maybe th e1st weekend in Aug. Mark