That 2x6 is a girt and on flat as well as the 4x8 which it dovetails into, but drawn wrong, good catch. I will lower the bent girts to keep the joints separated at the posts.
The local saw mill, where we will get the wood for this project does not age the logs for very long, so the wood is very wet and green.
I typically get a lot of checking when I air dry in our dry climate. I usually stack the boards log cabin style and don't cover them. How do you suggest to dry the boards so they don't check as much? What moisture readings do you look for before building?