I have re-edited the area to fix the waterways that overlapped and looped, deleted two building duplications, deleted duplicated rail sections.
See ...
https://www.openstreetmap.org/changeset/159979263
https://nrenner.github.io/achavi/?changeset=159979263&zoom=8&lat=-26.81145&lon=151.6152&layers=B000000TTTFT