On page 11-02 you mount the left elevator to the horizontal stabilizer for the first time to check travel up and down and for rubbing. I discovered that my inboard bottom leading edge of the elevator rubs against the lower skin of the horizontal stabilizer and after much close examination it appears that the hinge line that runs from the outermost hinge to the center slopes downward; enough that the lower leading edge of the elevator extends about an eighth of an inch or so below the level of the lower horizontal stabilizer skin. How can this be? Everything else has been spot-on; plus the hinge brackets on the elevator as well as those on the horizontal stabilizer were prepunched. What can be done about this? There is no adjustment for up and down; only for and aft with the rod end bearings.