RE: Elevator with compensator stability
well --sorta
if the world were perfect there would be no problem with those little things - called aerodynamic counterbalances.
The idea is to reduce the force it takes to move it (the elevator) and to increase effectiveness of the elevator (bigger is better).
You end up with less stabilizer and more movable elevator That means the force to hold the movable part must be very precise. which in the case of most small servos (10 15 inch ounce) is not very good. also hinging must be tight and the surfaces should not bend.
Pattern planes don't have because up till recently they need only very small elevator power - basically flying on big trim tabs.