Looking at the production line for the supports you can see the ones I have cut the slots for the supports on the left in the forground. The ones behind are just glued and screwed and have the support block for the bolt. One thing I will do differently will be to paint the supports before fixing them in place, It wasn't an issue on the first section because I could move it and lay it down.
The end section almost as I planned it, I will add the support for the facia on the second and third leves when the other sides are inplace.