Touche, Votart! Thanks for the idea.
I was having a lot of trouble getting the last dillo into the portal. (Note to self: must remember that for next time...)
On another note, I began a bit of a different concept. More of a suspension bridge like Sydney Harbour. It fails as uploaded here, but isn't far off.
I upload it for it's "novelty", being different to all of the other entries, although I confess to learning the concept from other challenge solutions.
I decided it was too expensive to consider (it seems to use a lot of bars), but with the score at 950+, maybe not!
I'm sure it can be made to work, perhaps by increasing the left hand span to reduce the tension at the failing joint.....