I read the On Point about nib creep but there is white fuzzy stuff on the feed of my pen. Is that nib creep, too?
White fuzzy stuff in your ink or on your pen sounds like mold! Unfortunately, the only proper way to clean a moldy pen is to take it apart and thoroughly clean/disinfect it. If you’re not comfortable doing this, it’s best to send it to a professional! If you have a moldy ink, it’s best to throw it out.