Seasick, I don't know what kind of glue you used but I'll relay a little story that happened to me. I bought a model off of eBay several years ago. It was an F-80 that the seller had just started. He glued the upper half of one wing to the corresponding bottom half. The only trouble was that they were a bit askew and I didn't feel like carving/sanding away all the overlapping plastic.
I remembered something I saw on the FSM forums where you could put the glued parts in the freezer for a while. The freezing temperatures would render the glued joint brittle and you could then "snap" the parts apart. I gave it a try and, lo and behold, it worked! I'm not sure if you're too far along in your build to try this but, if not, what have you got to lose? I put the wings in the freezer and left it there overnight.
Hope that helps,
Eric