Well it appears I've solved it. After verifying that both PCV valves worked, I narrowed it down to My attempt to cover the hole in the head. Even though it couldn't have been more than half a mill thick. Even with a little RTV, I had oil coming out between the cover and head. Ended up doing...
I know this is an old thread but hoping someone has done this and had issues and found a solution.
Did this mod and am having the same issue that Ffor was having. I noticed they never posted their solution, so thought I'd see if anyone else had. Used the two PCV valves mentioned (PCV266 from...