Hi Ken;
  Can you give some details on your external oil pressure regulator? Make, model?

The reason I ask is that I have my oil outlet at the bottom of the end housing and have just put a plug in the outlet on the front cover. So the only reason for oil to go into the front cover is for the oil pressure regulator. If I used an external regulator I could get rid of that pesky oil O-ring and just tap that outlet for a plug instead.

Todd Bartrim    (I think my o-ring is leaking)

C-FSTB RV-9endurance
13B Turbo