Valve pocket/bowl hog tools....

I must be stupid. I use tulip headed valves on everything I can. There is a reason for it. And it make sense.

Nail heads look good when you measure the port and put them on a flow bench, but the tulip will make more power. Every time.
If what you are doing works, it is possible you are not stupid. You may be smart.
And
If what you are doing works, it is
also possible that you are stupid, but also lucky,,,
I don’t know, just going off what you said.