It's not the moisture that determines how often you cut it. It's the internal stress created from thye drying process. During the dry, the wood shrinks & contracts. It also wants to twist & crack & bow & whatever else but it's virtually clamed down in place while it dries to keep it straight & mostly crack free. Once dry it'll hold that shape......for a while. But it's still full of internal stress points that otherwise would have been cracks or warps or twists. As you cut layers off the wood, you begin revealing these stress points as well as making the wood weaker due to it becoming thinner. In essence, a stress point that was too weak to warp a 1.5" square, may very well be strong enough to warp a 1.25" x .950" tapered round. So again, it's not moisture you have to worry about, it's the stress locked inside the wood once it's dry.
