I am doing some finish work on the wing tips before I am ready to primer them. There is a coating on them, light green in color that I am wondering if I need to remove before primer. It comes up really easy which makes me wonder how primer would stick to the wing tip as a whole. Having zero experience with fiberglass and pretty much an equal amount when it comes to spray painting makes me wonder. Pic isn't great but you get the idea hopefully about the stuff.
Thanks
Gary