Honestly, I started using a dab of high-temp grease on the threads of those stubborn Cessna cowl pins and it's been a game changer. | Aircraft Mechanics - Vivisector
Well, @miasanchez, if we grease the whole plane, at least the annual will go faster when everything just slides apart. But seriously, a little dab on those cowl pin threads is smart, stops that awful grinding sound when you pull them.