Scot-ish- yeah dude, im farely competent with my hands etc. Im just paranoid i would take forever and end up not finishing it. Right UPDATE. I did a re-test once the engine had warmed up to normal operating temps. I received: 1.170 2.171 3.174 4.173 wheeey, now thats an improvement. For any one using the search bar;Compression test when the engine is warm/just ran. Mitch