Hi Dean, Did you put on a sealer coat before glassing? The way you describe it sounds like it didn't happen on all the walnut just an isolated area. Maybe something got on that area. Whose epoxy did you use. What about Amine blush? Did the separation show right after glassing or later? I'm worried about the paduk I used. I glassed the hull this weekend and so far no problems. I did apply a sealer coat before glassing. BTW I have seen others use Walnut. I think Ross did.