Guys thanks for the help. I again am guilty of trying to over complicate the problem. I was under the same assumption that the fill on the plan should be different (note photo at the scarf joint) this is part of what started the panic.

This morning I had the brilliant but simple idea to inventory the ¼ x1/4 spruce stock and compare it to the kit parts list. Low and behold there in black and white under spruce sticks.

2-1/4”x1/4”x 22”; fuselage frame top
3-1/4”x1/4”x36”: cabin top stringers, fuselage frame bottom
4-1/4”x1/4”x7”; cabin doublers