Joey, I'm not an expert on this. Just interested in the topic.
My late friend Dennis Dieckman would talk to me for hours about wood. That doesn't mean much, other than I listened and was interested in what he had to say. I don't know, but maybe he invented the phrase "River of Wood". At any rate, you and others know what that means. Simply Long Term Planning. It also means, he was of the school of Air Drying wood. For a Really Long Time!
I own 3 Dieckman cues that I play with, a couple others that I don't but have for other reasons. Call it sentimental. Call it a minor investment. Whatever. One Off's.
Point is, his wood was Air Dried.
His Shafts don't move. I see movement in the butts. That doesn't bother me in the least, but why. Different woods competing???