Airbag not centered on stock control arm

[~DropShot~]

Hi all,
I just wanted to thank you all for posting great information that helps us guys that are new to restoring trucks.

I recently purchased a 67 bagged stepper and I have been able to find straight forward answers to certain projects on my truck. Doing a walk around my truck, one thing that concerns me is how my airbag sits on ride height on the front control arms. Its on stock control arms and I believe stock spindles. My lower control arm looks cupped at the bottom. When aired out the airbag looks centered when "pancaked" out. I was hoping you can evaluate my picture and possible give me advice on how normal or abnormal it looks. I've seen this curved airbags on only a few trucks out of many. In the future i plan on going Porterbuild all the was around but I wanted if it is something I can fix while keeping the coat reasonable.

Again thank you for any input!!