In over my head

[Buzzard Bait]

This is embarrassing but I give up. Can anyone clue me in on how to resemble the trigger and shell lifting mechanism in a Remington 512? The back part with safety I'm good with, but can't tell which side of trigger spacer goes on can't get feeding mechanism to time or function right or bolt to cock. All of the exploded view drawings I have seen are too poor to tell the relationship of the parts.
bb

 

[Eppie]

Do a image search on google and there are a pretty good sets of drawings, they may be better than what you have now.