So what was the final step that stopped the leaks in your opinion - the silicon grease on the o-ring?
Funny that my Sta-Rite manual (OLD) specifically states not to use any kind of lubricants on their o-rings as they tend to attract dirt, reducing life of o-ring, etc. But EVERYwhere else, I see to put grease on these.
I also have a leak on my Sta-Rite pump, so just curious to see what it was that finally fixed it for you. I have not taken mine apart yet, but will do so today.
Thanks - very helpful thread!