RE: Check those servo arm screws!
This is a good reminder. Thanks for posting. Like Jim says above, too much loctite can damage components as well, but a little drop won't hurt metal to metal (screw to servo gear) connections. Even aluminum.
On my checklist (I'm the only one that has one that I've ever seen) that I keep tethered to my waist, I have an Acronym: F.E.A.R.
This stands for:
F: Flaps
E: Elevator
A: Ailerons
R: Rudder
I pull on all the surfaces and check their movement, position and condition.
Even this can't catch everything.
Ali was doing the good graces of putting my Ultra Bandit through some paces (he was spanking it) and he was saying that it continually kept getting out of trim. I found that the mounting bolts on the ailerons had become a little loose and with hard movements, the aileron would move in the servo box.