We were taught that the only thing that would remove Remington's Dupont Gloss finish was Permatex Spray gasket remover . I have tried it in the past and it does work good . I don't know if it is still available .
Used it in the past, not recently.
This is what's out there now:
https://www.permatex.com/products/gasketing/gasket-removers/permatex-gasket-remover-low-voc-formula/
