should valves rotate ?

....and I'm still curious. Are you running lash caps on the exhaust valves? I know a lot of people do on these builds including both of mine. Not sure what or if any difference it makes, but it might....

No lash caps on either.
If I ran a lot more lift or rocker ratio , I might consider it......but the sweep is well centered on the valves and nowhere near the edges.
I won't get out to the garage till this week end , so I will have plenty of time to ponder this.
And I have gotten some solid advice on what to look for , so I should be able to sort it out.
I just hope I can do it without pulling the head.