my brother just bought a 01 venture 700. but im mr. fix it so thats why im here. he seys he can only get it to do 70 mph on the lake? is that right? also is thier a diffrent clutch he can put on it to improve it and what would that do? when he bought it the guy said another yamaha sled had the same engine but more sporty clutch and he could put that on if he wanted to. any one know? thanks