Read your plugs, they will tell you if detonation is present by specks on the porcelain (or worse melted). The plugs will also tell you your tuning.

Leak down test is a must do.
JMHO, your compression test shows a problem.

Quote Originally Posted by NegativeZero View Post
Static compression ratio is 10.1:1 Results of a cylinder compression test are as follows:
cyl1 - 135 psi lower mid of 10% compared to highest
cyl2 - 130 psi very low side of 10% compared to highest
cyl3 - 139 psi upper side of 10% compared to highest
cyl4 - 132 psi borderline low side of 10% compared to highest
cyl5 - 133 psi borderline low side of 10% compared to highest
cyl6 - 137 psi mid side of 10% compared to highest
cyl7 - 125 psi below 10% compared to highest
cyl8 - 143 psi highest