RE: Carbon gear servos
Carbonite gears don`t like Loctite! This destroy them, they become brittle. Could be a problem for people using metalgear a lot, and often secure the servohorn using Loctite. They could unintentional add Loctite to carbonite...
10kg for ailerons; yes.
10kg for rudder; which plane, which motor and how do you fly. For pattern it is more than enougd, For 3D it could be a bit small...