Mark at Kit Com suggested about a 2.5" wide hole at each outboard hinge big
enough to remove the hinge bracket. Although he suggested first putting a
slot at each bolt location until I am sure of its position. I also forgot to
ask about the control horn spar bolt access.
While we were on the subject of the elevator hinge bracket locations, he
pointed out to me that the elevator spars aren't always in an ideal
location. Even though I have a good horizontal centerline down the length of
the face of the spar, the spar can sometimes be forward or aft of where they
should be. This can cause the center of the bolt hole to be centered top and
bottom, but it may be too far forward or too far aft causing a non
concentric rotation of the leading edge of the elevator when rotated. This
can cause the leading edge to hit the upper or lower skins, or create a gap
depending on the spars location forward or aft.

Looks like anouther 50 hours of taking measurements

Dale Wills