Bring each cylinder to TDC...adjust to zero lash......give extra 1/2 turn. That should set them so you can start it.
When starting it first time, keep the RPMs up about 2000 for at least 20 min to break in cam.
To adjust with it running, back off each rocker until it ticks. Tighten until it goes away, then give it another 1/2 turn.