The screws described as P2 Pentalobe in the antenna bar removal step ARE NOT P2 Pentalobe fasteners! P2 tools strip out the heads on these. Per the Apple manual, the actual drive type is 1 IPR. Wera makes one.

You should update all your guides that include these instructions. At least in my 2021 16" MBP, the screws described here as P2 Pentalobe ARE NOT P2 Pentalobe. P2 tools strip out the heads on these. Per the Apple manual, the actual drive type is 1 IPR. Wera makes one.

Is there a source for the 9 tiny screws that hold down the antenna bar? Your guide describes them as 1.5mm P2 screws. The Apple manual calls them 1IPR (part number 923-06856). I've reached out to Apple and they don't sell them.