I'm installing a 48or49cc 2stroke FlyingHorse kit from BikeBerry-I am unsure as to what to expect, as this is my 1st build with hopes of future builds. My bike is a very tough pedaler? I've pulled the spark plug, removed the clutch plate, still not @ all a good "just" bike. I was also considering the addition of a jackshaft kit to possibly achieve a better free wheel or easier "start-up" pedaling gear. Any insight and/or help ideas would be greatly appreciated.