Should I pull out the cartridge nipple? It seems like its securely lodged in there. Does that mean its from a cartridge that broke off?
Can anyone point me toward a video that I might use to disassemble the Elite in order to take a look at whats in there?
The way that Pilot cartridged are breached, is for a protruding half-round portion of the cartridge fitting to flip the colored plastic disc which seals the cart. 90 degrees rather than piercing the plastic like most others (or dislocating a ball as a few types do). If you twist the cartridge while inserting it you can wind up just pushing the disc farther in to the cartridge without it flipping open, so for most reliable operation, don't twist Pilot carts when you insert them.
Almost all Pilot pens that take the current design cartridges use the cartridge fitting as a retaining lock ring to keep the feed seated and sealed in the section. To properly disassemble and reassemble these pens, you really should have a special wrench that can be home made from 7mm OD brass tubing (or purchased from a few Japanese Ebay sellers). The exceptions are pens with plastic section threads and clear ink-view windows, in those the whole cartridge fitting just unscrews from the section. The Grandee and Deluxe series pens also have more complex disassembly protocols, so don't try forcing their feeds out the back of the section without removing the nib and section tip first.
here's a picture of the tools I made for Japanese pen disassembly, the larger one is for Pilot, the smaller 6mm version fits similar lockrings in Platinum and Sailor pens.
Edited by awa54, 17 March 2020 - 04:46.