BTW, with my Skybolt, I used the hardware that came in the ARF kit to do the installation pictured. No kidding. The better setup didn't cost me a penny more.
And it actually took me less time to do and was easier to do accurately.
I cut the horns provided and threw away the bases. (Kept the screws however.

I used a razor saw and slotted the ailerons to take the tops of the horns. Epoxied them in and went to supper. Done...........
Do you find that lining up the screw holes of the horn's top with the bottom to be a real pain in the ass, and it takes a bunch of time and never works out worth spit. I didn't have to do that exercise in frustration FOUR times worth. That alone makes me look forward to my next biplane. If this rigging arrangement didn't do anything else, just not having to screw on 4 bloody horns is worth doing linked ailerons this way. To heck that it flies better. I DON'T HAVE TO do 4 horns. The better flying is hard to prove to skeptical people anyway. Tell everyone you did it that way to save time and frustration. And let 'em fly their "tricky" biplanes in ignorance.