I live in a 4th floor condo and remodeled my bathroom 2 years ago - all went well- the problem has been, while I can take a shower with no problem I can't take a bath at all without my neighbor below me knocking on my door within 20 minutes to complain that water is coming through his bathroom ceiling light. I do not fill up the tub and water does not spill over the sides of the tub. How is it I can take a shower but not a bath and it all goes down the same drain? I do not have access to the pipes as they are all behind a tile wall.