[68Gold/white]

You could have a timing mark issue, or balancer slip (yes even if its new).
I'd advance the cam 2-3 degrees at a time. Go out and drive it, see what it does. See if it pings under a load (like going up hill, or from standing still). If it doesn't ping, give it a little more timing. When you get it to the point where it does ping, back it off 2 degrees. Go drive it more see how it does...