so today I wanted to learn more regarding the "batwing design" of my horizontal. Very uneven look although I like the slightly speedster styled tails.
Look at the trim tab area

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Insight shows a mess of thin, unattached ribs, hold in place only by PVC electric tape. Some housebuilding insulation foam was added for "strength"
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OK. steelframe is good, w/o corrosion. I think, I like to have a slightly shaped tail again (hope that`s not naughty!). At the moment vertical is flat while horizontal was with profile. Where to find a suitable pattern/shape? My manual shows only an outline of a horizontal rib with 1.25 height? What about the elevator? Further 6pcs. are mentioned, but if you check 1st pic. there are many more. So how to proceed?

Next there is a trim servo labeled with 8V or alike. It`s still working, but I have only 2 wires and there is no end stop (elctronic/mechanic). Should I keep this item or is there a more modern one nowadays standard?