Very nice cage aerials... I made some in 700 scale for my Tiger a couple of years ago... The problem with the things collapsing when released from the jig was one I well know!
You Can get them back though... but it causes a much more severe problem... you have to pull them back to more or less the same tension as when they were in the jig... and as I used monofil they were under enough tension to stretch, but in order to stretch them back to the original shape you put so much stress on the yards they bend... Not nice.
Here is a picture or two to illustrate the problem..

Under construction

One set fitted...

When I added the second line the top yard bent to almost 30 degrees off horizontal... do disaster! Someday I will rebuild the whole rigging!

See what I mean...
