Ok, so I feel very dumb but I can't figure out the roof mounting system. I have three black spots on either side of my roof that look like I could unscrew with a Phillips to access mounting points, however when I try to turn the black bits they just kind of tear apart where the screwdriver goes.
I was planning on creating a roof rack like in this video:. I was going to lay a superstrut from front to back on either side but the roof has a curve from front to back so now I'm trying to make a new plan. It would help if I could at least figure out these little black bits.
I was planning on creating a roof rack like in this video: