Did what I hope is the final fix to my valve cover leak.
The casting on the Ford 427 covers is terrible (351w). Voids all over the place.
I used black
oil resistant RTV to glue the moroso gasket onto the cover, hopefully this kills my 'mystery' leak once and for all.
Check out the pics:
https://imgur.com/a/LX3U3FN
The previous owner swapped on these covers. Pretty, but a pain.