Hi Roy,
Firstly, do you have all 9 of the paper clues for this puzzle, with the drawings of the posts?
I agree that the posts are rather similar and are difficult to differentiate. This seems to be a random puzzle, though, so difficult to give a step-by-step.
Have you checked Malcom Schmidt's walkthrough
HERE which has screenshots of all the posts? It might help a little.
Keep us posted.
