Ed,
I think we are on the same page--further back from the tow vehicle. The screw holes aligned nicely above and below my frame, can't remember which hole I used. As for mileage--about 12.5 pulling up the mountain passes, a lot more coming down and an average of about 14.8 mpg. Never gotten above 18 on the flat here, but never have been below 4500 ft. elevation either. Can't believe how much power that Eco-boost has. I could go WAY faster than would be safe
Mark