I've always wanted to take one of these apart, so I did it, but don't particularly care to put it back together. I did make a weak attempt to do a compression test with an old tester and it came up to be 122 pounds, while warm. I'm no technician so I don't know if I did it properly or what the numbers are supposed to be. All that is included is in the pictures plus 99% of the screw set (not pictured).