Hmm. Ok I'm having a performance issue myself (slower acceleration, engine cuts often cuts off right after starting up). I did a compression test as well and consistently got 125psi, but the tech manual says it should be around 168psi (11.8kg/cm2). Were you told that 125psi is good compression? I've got an email into my dealer to see if 125psi is a good figure for a People 50 2stroke. I'll post an update once I get that info.