Header installation step one
1. Place header on top of windshield
2. Hold each side down snug untill the flat section where the bolt at the sunviser mount on each side has made contact with mating surface. Step three will provide info if not able to and another person to hold it down snug would help immensely
3 . In the event you cannot make the surface mate. You will notice that the clearance issue is at the rain gutter on the outside. You will need to provide clearance by sketching with a pencil while in place you can accurately give clearance by transcribing a new line that follows the rain gutter. (Refer to picture below "A"). This area was left a little long so you can get as closely trimmed as possible as it seems to be a water entry point on my Blazer. it just made sense trim it a closer while on the individual Blazers as close as possible . I would very much like feed back on how much was trimmed on yours if possible . It may serve as good info for the door windows weather proofing
