I guess WD-40 isn't the best penetrating liquid for loosening rusted fasteners.
I should have used that 50:50 mix of ATF and acetone to remove the fog lights on my rust bucket Outback, friggin fog light studs broke off thanks to Michigan rust (don't buy a car from Michigan!)
Thanks for sharing, this'll be helpful for removing more stuck fasteners off my rust bucket Outback.
"Why would I want to profess my feelings for some 3D girl?" - Tomoya Aki from the anime Saekano