I personally have never heard of adjusting lifters that way. Then again I don't how variable duration lifters differ than a normal hydraulic lifter. Usually you want to bump the motor to TDC. Rotate it by bumping the starter or with a wrench on the crank bolt until both valves are closed on each cylinder. Tighten the rocker arm until you can't manually spin the pushrod with your fingertips anymore, then turn another 1/2 turn. Or some people say another 1/4 turn.
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