I have a 9 foot garage door. I would like to know the rough opening for this door. Top to Bottom and Side to Side. I do not have a spring door assy. It is a straight roll up door. i would like to know the framing and how to hook up the door brackets and so forth. I have three 2x4 cripple studs on each side holding up the headers. I then have a 2 x 6 on each side, butted up to the 2x4's. The opening is 8' 10" rough opening by 7' in height. is everything ok and am I doing something wrong or do i need adjustments. I cannot find any illustrations on the web at all. I NEED PICTURES LOL. please HELP ME!