Ok,
I ride 9m delta. The LE went off a first time 3mnth ago when velcro on the wing tip didn't hold, LE poped out and exploded with a big bang:(
Area marked around 5x5 cm for trying with a patch, but didn't work, so sealed in a shop professionally:

Neil done a good job!
But than one month latter on my birthday :(
Another one, see 1cm from the sealed edge:

Sealed again!
And than today another one!

Exactly the same place! Unbelievable! What can cause this? Folding? HELP!!!
So good wing tip has got around 10cm left when unfolded:

:
But I'm worried about this one, since nothing has left!

If the LE is shorter and shorter is the only option replacing it?
I actually put some bubble wrap at both ends to support the LE, around fist size.
Obviously didn't work. Bubbles intact tho, so it was supporting...
Now, Neil's suggestion is to reinforce the LE end with a patch, but looks like the patch given to me is not flexible, it's more like a plastic foil.
Looked my bigger Cab, they have a double foil around the ends, this one hasn't!
Please advice!
Thanks