Maybe try it, and also fix the "vibration" problem? LOL.

Have been done this for my gas, glow and electric planes, and yet to find a soldering joint failure in 15 years.


Edit. Added a photo of the soldered servo wires on my AW extra 260 75cc. Heat shrink tubes (3 X 1/16" for each wire, plus 1/4" for the three) are used to provide insulation and protection.