OK, I am going to post questions earlier in hopes of not having to fret over trial and error work. I am working on centering the flapperon in the jig and before I use an entire tree remaking the jig until I get it right I am wondering if someone might have a trick to drilling the spar hole so that when the flapperon is placed inside the block, the leading edge and trailing edges line up. I have drilled the spar hole right in the center of the seam but as you can see it does not align the edges correctly.