Just a dabb of RTV on the screw works great. I usually use the orange type so you can see it's there when it squeezes out from under the screw head. It's also alot easier to take the screw out when you want than loctite. Never had one come loose yet but I have had the scews come out without it, luckily only on the ground during engine break ins before all linkages were finalized. Sorry about your plane Roboto.