Servo on the elevator?

Does anyone have a servo tab on their elevator. I want to see how it is set up for a 2+2 I am building.

I have one on my yet to fly clipped wing supercub. It is a Ray Allen unit.
I built the trim tab from a wag aero kit and if doing again I would move the tab control arm to the middle of the tab so the servo could be put more into the elevator. The rib is otherwise in the way and I just surface mounted the unit with a alum cover.

I have one as well, could take some pics for you if needed.
It works really well, although very sensative!

Thanks Bernard, I would like to see a picture of it. I also need a close-up picture of the top of the fin where the leading edge tube and top rib are welded. There is a funny joint on the plans and I want to see what it looks like covered.
Thanks a Bunch!