Revisit of elevator centre section

I was not happy with aspects of the elevator centre section which I reassembled a few months ago.

1) There was no getting around the fact that the rib 1 reinforcing brackets - themselves replacements - had a slight bend position error of about 0.5mm which would prevent them from seating perfectly without a gap. So I nylon hammered these bends on a specially shaped wooden jig. The RoC of the original bend, and that of the wooden jig were large enough for this not to have any issues.

2) On the previous reassembly I used the original control horns but new control horn mounting brackets. I put a rivet in the wrong direction, removed this and flipped the control horn bracket cursorily checking the hole-swelling and loss of flatness of the control horn surface around the hole (due to the use of stainless steel hinges). Unsatisfied with this, I disassembled, check the control horn brackets has no swelling or loss of planarity. I had an excess control horn from the original kit, and had subsequently obtained a second control horn from TAF. Using these two new control horns I reassembled the control horn subassembly this time without any stuff-ups. The same rivets were used as previously.

3) Both the original hinge, and a replacement, had AN3 holes which had to be elongated abut 0.2mm in order to match the holes in the spar. I was more or less resigned to this (and it is no doubt perfectly sound as the role of these bolts is probably mostly tensile), but on impulse obtained a second replacement hinge in the hope of a better result. Indeed the third hinge provided a perfect match with the spar.

Everything was assembled, using Duralac yellow smeared on the bolt grips and under the washers. 6.4-8mm grip stainless steel rivet were used with Duralac yellow to secure the hinge middle holes. The AN3 bolts were torqued to 37 in-lbs (not the lower 25 in-lbs) and marked.