Thanks for the reply. This is the strangest thing. This thing leaks without the engine running. If fact the engine has not ran since Saturday when I discovered the leak. Everything above the sump is dry. I did carefully check the oil returns on all cylinders etc. If I wash the area off with solvent and dry it with air and return the next morning I have oil drips hanging off the bottom of the sump in a couple of places, oil has dripped onto the left exh pipe and ran down to the rear exh hanger and pooled there a bit. Not to mention small puddles on the floor. The sump has not been damaged, it was new with the engine. My A&P friend is under the weather and I have not bothered him with this but I hope he gets back on his feet and looks at this for me. I am considering putting dye in the oil as a way of confirming the source of the leak. I just don't want to start taking things apart and throwing parts at it until I am 100% sure.