Adjusting Crane roller rockers. The instructions say. Rotate the pushrod with your fingertips, rotate and tighten nut until you reach zero lash, turn nut 1/2 to 1 full turn more, then tighten hex lock. WHAT A CROCK! I did this and the motor runs like $hit. Major valve float and a lot of popping!! The only way to get it to run decent and not pop is set at zero lash and tighten hex lock. NO EXTRA TURNING OF THE NUT. Does any one know why they tell you the extra turns of the nut? Is this different with every motor? Anyone set there rockers up and have the same experience?