too much wood ?

[Thomas Erickson]

I don't like the idea of linings butting up to the blocks; to me, it just seems like asking for the ends to come loose as things shrink and they get pushed up tight to the blocks. I'd rather see them let well into the block so that they're securely tied down to the rib. Seems more structurally sound to have the linings secure to the blocks, too.