Thanks Bob. A new pump is over $300 so I am willing to do what ever I can to repair/rebuild this one. Just has been driving me nuts with the leak/no leak situation. I dumped and flushed the tanks and put it in storage and there did not appear to be a drip at the time. I went back today to get some things and checked and it started to drip again. My tanks are as empty as I can get them and since the valves are shutting off any liquid getting to the pump I was completely baffled as to why it continued to leak. Can there be that much left in the pump after the valves close? Do you know of any videos or instructions available on how to remove and dismantle the pump? I want to be as well informed as I can before I start into this. My brother says to just remove the whole thing and put a manual system in but I don't want to do that.