As we secure the two panels on the third corner, David realizes we will indeed have a problem. The sections were calculated without taking into consideration the width of the studs. We've allowed overhang on three corners, as you see here, to compensate (we'll reuse these same pieces over at Migyur Dorje, which is much larger, so we don't mind have some bigger pieces). But when we get to the last corner, we'll have to cut one of the sections down. So it goes. We've learned this lesson over and over, you're going to make mistakes. Action cannot be taken without risk of this, but we must do what must be done. So we fix mistakes as we go. One of our most useful phrases is "no big deal, we can fix it"...