Repair the center section of a Pike Perfect

Soaring friends, I have a damaged Perfect and would be very much appreciative of some guidance in making repairs in the center section of the wing. It seems to be fine with the spar and trailing edge spar (stiffener). There is some softness outboard leading edge. But the thing which baffles me is a long area of about one inch wide "delamination" of the top and bottom skin near the trailing edge. It appears that the "top" layer has pulled from the foam inner layer. I know the wing is hollow so how do I get the thin three layer skin bonded back together? There was a thread about the F3J worlds I think remarking you better be prepared to make field repairs. I have lots of time and tools - what are some tips as to how to fix these guys. Is CA the best approach or epoxy. Does CA eat any of the materials? Do you open up the wing from the bottom so you can get at the innards and how is the best way to get in and back out!

Thanks for any help, Jim
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