I have a question about mounting garage door openers to my 10 foot wide garage doors. My doors are insulated and have the typical vertical metal braces visible on the inside of the door but there's no brace at the vertical center line of the door. The instructions call for attaching the opener on the center of the door which makes the most sense. I see my options as attaching the opener off center on the support that has the handle used to manually lift the door, or get a piece of angle and attach it across the two existing off center braces so I have a solid center mount point. I attached two pictures showing the inside of the door. What's the right way of doing this?

