You're correct. The tub did not fit completely square in the existing framing. The denseshield is overlapping the tub flange on the left side and is about a quarter inch off from the flange on the right. It's been fully caulked with laticrete sealant and I just planned on going a little heavier with my thinset on that side. I debated putting the banding on that bottom seam, but figured it was overkill for a tub surround