Cam eccentric on 340

I just pulled the timing cover on my 340 to check the condition of the timing chain due to a timing issue and I found the same result. Whoever was in there last installed that washer upside down. In my case it all seems tight now, doesn't rattle. There is a mark on the inside of the timing cover from the eccentric so maybe they caught the loose bolt and tightened it up. But from the wear I see on the eccentric and the arm of the new fuel pump that has only 45 minutes or so on it, it doesn't look like the eccentric is getting a lot of oil. Need to try and look into that. Anyone know where the oil comes in from for that? There was definitely some oil that dripped out the fuel pump opening when I removed it. Maybe I'm seeing ghosts....