ORIGINAL: Scar
Simple. Take a deep breath.
Now, stand the wing on end. Slip a thread (not a string, a thread) into the center hole. Place the tip of your shopvac nozzle in the servo hole. Feed the thread in as it advances.
When the thread's through the channels, pull a string. Or just pull the servo. Repeat on the other side.
Best wishes,
Dave Olson
Use caution with this method. I tried it several years ago and actually crushed the wing by using too much suction. I'm not saying it won't work, it does, just use caution.