I have a bathtub drain that needs to be moved over roughly 3 inches to accommodate the new free standing tub that will go in. Does this need to be moved from the plumbing underground or can we add bends to do what is needed? It would need to move over further into the dirt side of the photo, not into the slab. The water lines you see in the photo are from the old drop-in tub, they will be rerouted later.