Hello friends, I bought my son an Aprilia Ralley 50, I thought that was a good choice because of the engine. According to the seller the scooter should run so 65-70, but is not a problem, he only took out the Varioring, packed 7gram weights in and removed the throttle from the exhaust manifold. Since the scooter did not come out of the feet at all, I first made 5.4gram weights in the front and experimented with the springs at the rear, then I am now at the red train and test drive: Roller runs 70, without problems, well, then new exhaust on it, this time with the throttle in the dumpster, test drive… Roller doesn’t really come from the spot again, but after 5 meters it pulls off up to 70km/h. Shit, so Varioring in, that’s about 3mm wide, test drive… 70km/h. That would have to be slower already because of the exhaust? I really don’t know what I can do now, d the only thing I noticed, the seller has built in a new clutch, because the old coverings were down, in there is now one with 3 springs, the worn out had however only 2. If I now go down to 4,8grams, I think he should start better again, but he must also be slow. Greeting Niklas1011