Thanks for your replies again guys.

The 'crackle' , like i said, is on the leading edge of the left side, about 12 inches in from the left hand side, and about 1 inch in from the front, there are no 'bits' shaking around inside the wing, so it is just a split rather than a break, the 'soft' bit is probably about 2 inches square - would you recommend me (a new builder) to actually go ahead and repair this, or is it safe to leave it ??

I could probably get some help to fix it, but i am wondering if i left it, would it get worse and maybe cause a crash ??

As before, all help appreciated, thanks people. []