Leaky roof

I have a 2001 31/24 KB that I bought used about a year ago. The forward section roof has leaked a good portion of that time. We caulked the daylights out of every seam and skylight and it held for a few months but recently it started leaking like crazy again. I climbed on the roof today and I could lift the center seam that is covered by a long rubber strip forward of the first skylight up with my fingers. The rubber strip is still glued securely to one side of the aluminum sheeting but does not stick at all to the other. The sheet that it has stuck to is beginning to de-laminate from what I suppose to be the foam core. Obviously I've got to stick this mess back together. Any suggestions on what adhesive to use or any thing else helpful? Thanks

Dan