See The servo bay with the wooden servo rails glued in

See The servo with a standard metal type output arm.
This one is from SWB MFG  
Hangar 9 arms do an excellent job as well

See the JR Output Shaft Support package. (Don't get too hyper, the price tag is Canadian dollars!!!)

See a closer view of the package. Notice the bracket that installs over the servo mounting grommets. The bracket has the tall Ball Link support screwed onto it.

See a view of the servo, output arm, ball links, H9 titanium turnbuckle, and Rocket City control hook ups

See another view of the same

See close up view

See VERY close up view at the servo

See Servo protractor-1

See Servo protractor-2

See The Dubro Heavy Duty servo arm is not a good choice, how do you tighten the ball inside the servo arm pocket?

See How to figure out your bevelling

The wing will be thicker at the root end (left side) than the root end (right side)

Determine the amount of angle you want and lay it out on the thick end (end view)

Layout the same angle on the thin end (end view)

Notice that the width at the top and bottom of the LE or TE is wider on the tip end than on the root end

(i.e.. the root end almost comes to a point but the tip end is wider from the edge of the bevel to where the LE or TE meets the foam core)