No but I did buy an 18,000 mile 86 concours with three zero tolerance exhaust valves. Those cam lobes were polished all the way around. I set the proper clearances, did adjustments at scheduled times and it was fine. I discovered that the valves were tuliping, however, it never became a problem and that is not likely anyway.
My take is set the valve clearance and run it. If there is still a problem then it could be time to dig deeper.
If you have a compression tester, I’d suggest getting before and after readings.
I recently had a conversation with a former Honda tech about valves that leads me to say that if it runs fine after setting the clearance, run it kinda of hard a few times, that may clean up some build up and the valve will sit deeper, check the clearance again. And if you have a compression tester check that again.
I don’t know if a tight valve would cause a “nasty rattle”, however, it is a problem to eliminate