Hey everybody, i've been reading old forums and decided its about time I make my own post. I've got a vespa grande I put a new kit on and broke it in for about 100 miles. I just took it apart and noticed scoring on the cylinder and piston and do not know what is causing this or what I should do. Any help would be appreciated. The bike is stock besides a malossi air filter and a 56 jet on the sha 12.12 carb.