I did wind up adding a 2x2 mm strip to the bottom of the second gallery. The supports will now reach. I also wound up buying some mahogany 2x4 mm strips. Max said he’d send me what I need in sapele, but I’m adding extra to the balconies. I used the notched razor blade to score the 2x4s to make it look more like molding. I think it turned out good. Touch ups come later