Most of his daytona cases are tapped wrong
"So from now, I will send him case tube, crystal, and pushers (if it's a Daytona case) to make sure all is working right. I strongly encourage you to do the same, until he decide to stop shipping cases what are not at the Rolex specs."
That's the key, if you send gen parts and have him install them then he will tap them properly to begin with, he uses the wrong tap because that's what's needed to install his aftermarket pushers. As for the lugholes that's ridiculous, if I had that problem I would ask for a new proper one, he will make things right, even if it takes a while.