Hi, I’m running a 100cc Chinese 4 stroke kit and really struggling. The clutch burnt-up and the engine started shaking really bad. It has always knocked and ticked since new, but I’m thinking it’s basically done. It appears to be the same engine as the Predator 79cc engine you can buy on Harbor Freight. My question is, does anyone have experience with this kit? What transmission options are out there for the Predator 79cc? If I could buy a better transmission that fits the Predator 79cc, I’d just buy the trans and engine and start over. The rest of the kit seems to be well made. Thanks!