I've been working on the elevators and horizontal stabilizer (IV-P). It looks to me that the hinges were centered on the stabilizer spar (in the Philippines?).  However, because of one thing or another they were no longer centered after the upper skin went on. The elevators are not too bad- there's at most a difference of .140 from one hinge CL between top and bottom and most are much less. The stabilizer itself is a different story with the difference ranging from .176 up to .313. The measurements were made with a depth micrometer but are approximate.
 One option would be to try to recenter the hinges on the stabilizer but I can see a lot of problems with that approach and there would be large gaps between the TE and the elevators that'd still have to be filled.
  It seems to me that one way to deal with this situation is to make the LE of the elevators concentric with the hinges. This does not mean making the radii equal top and bottom. Each side is shaped individually in relation to each hinge, and to do this I made a tool to scribe the micro as a guide for sanding. I've done enough so far that I'm pretty confident I can shape the LE's and bring them into proper relationship to the stabilizer, covering the micro with one BID when it's all done.
  Before I spend too much more time on this, what have others done? Is there a simpler, faster way to straighten things out?
    Thanks-  Bill Wade