I have finally gotten the moped to run after it sat for about 8 years outside. When I hopped on and rode, the speed peaked out at about 20mph (which seemed low to me) and it was incredibly hard to start cold. I went to Autozone and rented a compression tester and the reading was 65-70 PSI which I assume to be very low and the main reason it is so hard to start and why it's performance is subpar. There is some scoring on the cylinder walls but I wouldn't think they are large enough to cause issues (images below), do you think they are enough to cause poor compression? I worry that if I buy new rings and there is an issue with the cylinder, the cylinder will tear them up. Would it be worthwhile to get a new cylinder and piston? Are new piston rings the way to go? Is there something else I'm missing that would affect compression? Thank you in advance.