340 issue after camshaft change

I have adjustable rockers. I’m questioning the adjustment procedure. What procedure have others used with success? Happy to try it before removing this cam and going back to what I removed.
Cleaning up this post..........Let’s first establish what is the “published procedure” you’re using. There are quite a few procedures on valve adjustment. That info would really help in sorting out what’s what.

Looks like you have a hydraulic flat tappet cam and adjustable rocker arms. It may be possible you’re off on setting the lifter preload and that is why you have valves hanging open?