Yes, Sparky...er Tall Pauls diagram reduces the servo torque, but it buys you resistance to flutter. Flutter usually doesnt start because the servo cant hold position, it starts because of linkage slop.

A drop of CA in the threads of the one clevis will eliminate some of the slack. You can also put 2-56 nuts on the clevises. A drop of CA in the horn/clevis pivot point will take out some more slack, just "pop" the bond loose after it hardens to make sure it moves.

If your servos gears are sloppy, that can be a source of slop that can start flutter, so I suggest picking decent servos from the start. I've had better luck long-term with nylon gears, and the JR-341 servo has been a great long term servo for wing applications. I recently put a set of gears in a pair of 341's that had been in a plane that went into a set of trees at warp factor 6, then blew out and lay submerged in water for two weeks. I thought "eh, maybe I can use them in a foamie" so I put new gears in them. They ran like new! It was like finding money on the sidewalk..