1.Found interference with windage tray and top of stud , drilled windage tray to allow stud to "pass trough"
2. found interference with the little 12-point nut and seal retainer, 1/2 moon-ed the retainer in the nut area for clearance.
3. clocked-seal 90 degrees.
This was a fresh engine that was run 3-4 times pulled out, sealed up, pressurized and leak checked with soapy water and held 25 psi of crankcase pressure out of the car with no visible leaks at the gasket or seal, however leaked like a sive while running. Being able to examine the pan gasket under pressure I am confident that this was not a gasket issue. My summary would be that to make sure that the retainer can float without interference , then clock seal 90 degrees so that it alignment is guaranteed, fill sides with a good sealer sealer (I have always just used sealer on the sides). I have built many bb mopars, stock rebuilds, stud applications in stock blocks, and aftermarket block builds, this was my first leaker.
