Keith, I started having a look at yours, but I can't work out those beams on the left hand side.
At the top the long beam going behind the tall man's head seems as though it shouldn't be there--you can see the slats through the beam--but lower down a man seems to be sitting on a beam that seems to join up to the ones that are questionable. Can you tell from your original where those beams should and shouldn't be?
Then I'll have a go.
Cheers,
Peter