haha yes. very much had trouble with this... for the life of me i couldn't think of a shape of cut on the vinyl that would cover the inside nicely. I ended up just doing a 45 degree cut into the corner that left a small triangle that was visible from the top side. to cover it up I just cut some little rectangles using the extra vinyl from the center and tucked them into the underside of the flaps before i stapled everything shut. its not perfect, but after screwing the railing to the table, the "gap" (with the vinyl coverings stuffed inside) is barely noticeable. my buddy didn't even see it till i pointed it out to him.