Just for the sake of closure, I finally talked with an engineer at S&W race cars which is where I bought the. After conversation I moved the tether mount to a lower tube that's very close to the height of the axle centerline. I hesitated mounting it there because of the length of the tube, but the engineer assured me it would be fine. Their plans are very nice, but they just didn't include a chute mount point on any of the drawings.
Lynn