make sure u have the gauge in there just so, it's kinda b!tch to get it in there put a bend in it around 1/2 2/4 inch up it makes it a bit easier, are the valves open?? springs not compressed you should be able to feel the movement if not try turning the engine over another turn remember the engine has to turn twice for one complete cycle. I,C,P,E intake piston down, compression piston up, power piston down, exhaust piston up, if you have absolutely no slack your probliy just finished the exhaust stroke so your on over lap both valves slightly open, you wanna be just after compression