We are getting ready to replace our shower stall. Currently it is tile, and SOMETHING is leaking into the adjacent room and the carpet there is damp. We have removed the wall in that room to check out the plumbing and everything seemed to be OK. Question is, what else could be the problem? The tile really is in bad shape, and probably needs to be redone anyway. We are leaning toward replacing with a unit consisting of a pre-made base and separate walls (so we can get it through the door!) Any advice? We are really in the dark about this, and are just in the "research" stage! Thanks.