When cleaning and refilling one of my Wing Sung 3008 pens to give it to my son who wanted to use it in school I encountered a stubborn clear feed that would not want to give away all of its orange glory (Akkerman #16 Oranje Boven) after cleaning and even after refilling the pen with Lamy (Royal) Blue. So I was able to take the following pictures. Edit: (Was interrupted before I could add what I was going for, tsss ...) What do your feeds look like? Do you have unusual or unusually beautiful feeds? I am sure you have!