I inspected the engine today, the back of the head and block is clean, no visible signs of oil leaking or coming from that area. I guess that eliminates the oil feed.
The front of the head had oil on it. it looks as though the oil is leaking from the valve cover where it meets the head?
the valve cover is torqued down. I guess I need to inspect further.

 

Seems to be the front right corner of the valve cover.

 

its the either one or both of the cam plugs that sit in the #1 cam cap on both the intake and exhaust...I have the same problem and I'm fixing it tommorrow...Use Hondabond or similar sealant and a set of those cam plugs...You have to pull the cams or at least the cam gears off to replace them...