Looking at the Rule site I noticed this announcement, posted in Aug 2002. I did a search and there was a link posted here in Nov. that has some detail about pump models, etc. Aerator pumps with certain screws holding them together could fail and leak. You can replace the screws and things are then supposed to be OK, or Rule will supposedly replace the pumps. I just bought two of the affected ones (from a guy on Wakeworld) and was planning to install them tomorrow! Buyer beware, I guess.
http://rule-industries.com/livewell.asp http://www.northcarolinasportsman.com/news/2002/aug-02/rule-pump-recall.htm