Then go on Comp Cam's web site and read the intake center line method and do it. Several times. Do it as many times as it takes until the light bulb comes on. I've done hundreds, but as simple as my mind is, I still have to have the instructions in front of me and go slowly step by step. It's not difficult to do, but it's important enough that you don't want to make a mistake. What timing set do you have? I use the JP (Rollmaster) sets with NINE keyways in the crank sprocket. If you cannot get it DEAD ON with that, plus cam sprocket bushings, something is WRONG.