To lash our valves, we started with the intake side. Since this is a hydraulic camshaft, all we had to do was tighten the polylock until all the slack was taken out of the rocker arm and pushrod. As we tightened the polylock we also slightly turned the pushrod with our fingertips. Once you feel a slight resistance, you're at zero lash. All that was left to do was to turn the polylock a half-turn more clockwise by holding the lock with a wrench while at the same time tightening the set screw with an Allen wrench. This was repeated for all of the intake valves.