I was looking at the Guru. The piston mechanism is very intriguing. Did they form the outer threads directly into the body?
I have some of the Noodler's. My main problem with them is that they dry up over night. Same issue I have with a Parker IM btw. Any idea how to stop that? I was thinking it is leaking air around where the pocket clip is attached to the cap. Might get some low viscosity epoxy (wood rot repair epoxy) and coat the inside of the cap above where it contacts the pen body. That might salvage some pens for me. I tend to leave pens inked for long periods. I take fits of writing and not writing. So pens that dry out easily can be an issue unless I am just doing something quick with them.
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