The following pictures show the added frames between C and D and between D and E. This allowed me to lay the sole at right angles to the stringers and making it so all edges of the plywood are on frames or cleats. The waste will make the consoles. Frame C becomes the bulkhead separating the cabin from the cockpit. The opening in frame C will be a bit wider and the top of the opening will be cut out. The cabin roof will have a hatch at that opening as is typically done to allow easy entrance into the cabin. Hopefully the following pictures will help in the explanation.
