So, you trust your pre-shot routine. Still though, it may or may not be ok.
I think you may have answered the problem already. If you can swing the club or need to swing the club 25 different ways to grind through a round, then I'll bet you have pretty good control of zones 2&3. I'll also bet you don't change any components in zone 1.
Your zone 2&3 cannot be any better than zone 1. I know this, I've been there. I lived there for a long time too. You may have a great feel for zones 2&3, and because of such be able to repeat them pretty well. But you must build your swing from the ground up. Zone 1 changes effect most of zone 2&3 components. You have to change your grip and swing each day, because zone 1 changes.
But hey, I'm not an expert. Read Zone 1 and all components and variations. Then read Yoda. Then read Yoda again.
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