yea i have the 50cal opening too.
good thought ddwh. i've seen some sunroof processes/tooling that create odd shapes in the roof during installation. i don't think something struck it, but pushing, pulling, yankin, welding and stuff like that to ,essentially, a 4X8 sheet of steel, can create "lows" in the sheet metal. not uncommon and easy, in the process, to fix. once it's there and been painted though, theres little hope of fixing it. cept for bondo.
someone from a body shop would know more than me though.
