Scott,

My control horns are 89 mm apart (over the posts). This is due to where the hard points were located coming from Piedmont. I could have moved them slightly closer, but at the expense of being further from the hinge line.

If you look closely at the photo below you'll notice that the hard points are not even. One is closer to the inside than the other. My main concerns when mounting the horns were 1) equal distance from the hinge, 2) as close to the hinge as possible, and 3) equal distance from the center.

Keith