Hello have received as mentioned a scooter. (Explorer Iron 50) Roller runs, starts quite well, as far as everything Ok, until it does not come over 40 km/h! Meanwhile almost everything changed: Vario, weights from 4.8 to 6 gr. tested, ring is out, clutch + bell, (Naraku) counter-pressure spring harder (again the originals inside!) Belts,(Naraku) Cylinder + pistons,( Naraku 50ccm) Exhaust, (Silent Pro) CDI, (Naraku) Air filter insert,(Naraku) Intake nozzles (old had cracks) Gear oil, Main nozzle a number bigger in… But the thing doesn’t come on the grades with my 85 Kg over 40…? Does despite all the replaced parts as before? Suit is so lala, until 25 quite good after that doesn’t come much anymore, on the main stand the scooter takes normal gas, needs about 2-3 sec to turn up, with the gas is not going to play there is he sluggish/delayed inside? Mountain high he builds increasingly from speed goes down and one at some point you sneak around with 20 and is afraid to fall down. (Is there something better with lighter weights…) When it’s cold it’s going to be a little restless it’s taking a little bit of gas and a little smoke.. after a longer ride I came home and in the yard the stationary gas was suddenly higher? What else could it be? Greeting humpback whale