I have a leaking shower that I assume needs a cartridgte replacement. Already tried 0-rings, and it was better, but no go. Only numbers I can find on it (other than ASSE 1016) are HG94282 and 078020E10490R01. Doesn't cross to anything I can find on Delta's website, or Brizo (who they turned the series over to a few years after this thing was apparently mfr'd... the casting says 2000). Any help would be higely appreciated!!