Hello I have a problem with my scooter it is a Keeway RY 8 SP on 25 kmH. My probelm is that I come with 4 liters about 30 km far what really is a lot my second problem is that the scooter with only minimal climbs of 18 mph direct goes down to 10 mph and as soon as the climb is up to 4 mph more and if the climb is also too long then I stay still and the engine does not bring any more power on the straight and mountain he drives between 15 u.a. nd 24 mph. the 3 problem is that the scooter from 0 to 6 mph pulls quite well dan stops at once and only attracts very slowly further as long as it is mountain down or even you have to say that the scooter drives at volgass slower than at bits less than volgas