Thanks for the suggestions guys. I ended up making relief cuts in the trailing edge. I then used a level spaced up 1/16" and clamped to the top of the trailing edge of the wing. This induced a 1/16" bow in the opposite direction it was before. I wicked a bunch of CA into the relief cuts and unclamped. The trailing edge settled to almost perfect.

Note to self: just because the wing was straight 6 months ago does not mean it will remain, it is wood. Just another lesson to be learned for the next kit, probably a C402.