Here is a simple rule to follow when adjusting your valves:
when the exhaust valve starts to open adjust intake valve, when the intake valve starts to close adjust the exhaust valve.
Do it this way, then move on to see if you have other problems. I said do this first since you think that you may have a valve lash problem.
If Everything is new, you only have one chance to break in your cam. That will not happen if you are playing with it below 2000 RPM.
Rob