And one last image of the contemporary planking expansion detail.   It shows the square tuck pretty well.  For those that might have one on there model although its unlikely.  I have never seen a kit that shows one.  They are usually left off because they can be rather complex.  You can also see the number of planks....twenty which matches my model exactly.   Ten down to the bottom of the square tuck and ten more below that.  Hence the two planking belts I used.   Chuck