Although there is quite a few theories on how to do a correct PG Mod like a mag flip or reverse your lead and your ground wires. I will say that doing the mag flip will give you an out of phase tone.
But it won't sound as good as the correct way.
Please note, I am not a rocket scientist.
According to the Correct information that was given to me and then tested ... It wasn't just a mag flip. Although flipping the mag will give you an “Out Of Phase” tone.
Also, how the neck pickup is wound vs. the bridge pickup is the real truth and making sure they both blend correctly with each other for an "Out Of Phase" tone that is loud and musical not thin and ok with a mag flip.
Neither pickup was wound wrong just different from each other. Does installing the neck pickup reverse help with "Out Of Phase"? No.