I prepared a servo horn with two arms forward, as Rick suggested. But I went one step further. Rick's picture shows an included angle of 120 degrees between the arms. I figured the closer the arms, the better. So I cut my horn so that they were perpendicular. (In actuality, my servo did not come with a six-arm horn and I was too lazy to root around for one in my stash.)
Anyway, here's the results.
Note that the torque rod arms are perpendicular to the wing bottom and the servo arms are 90 degrees to each other and face forward.
Here's the maximum downward deflection . . .
and the up. About twice as much up as down. (The wing is upside down.)
Mission accomplished. Thanks Rick.
Oh, and there's no interference with anything in the fuselage.