Removing Pilot Con-50 Converter From Nib Unit

[Ashland]

I have an old-style, faceted Namiki Vanishing Point and wanted a factory stub nib for it. I made the mistake of buying one from Amazon that is like this one from Goulet Pens.

Pilot Vanishing Point Nib Unit, Black 1.0 mm Stub

http://www.gouletpens.com/pilot-vanishing-point-nib-unit-black-stub/p/PN71133

I was able to install and use the nib unit, but the pen leaked. After some research, I realized that the CON-50 converter won't work in my old-style pen. I tried to pull the converter from the unit, but it wouldn't budge. Additional research leads me to believe that a nib unit purchased with a CON-50 converter will likely have the converter glued in place as per
https://www.fountainpennetwork.com/forum/topic/273802-vp-and-con-50-converter-warning/

Is there any way to separate the converter from the nib unit so I can use a cartridge or the correct converter? Would hot water or a flame work? I'm not concerned about sacrificing the converter.

Thank you.

[Jamerelbe]

As far as I'm aware, the CON-50 converter is not glued in - at least, not if you bought it from Goulet Pens. It's a pretty snug fit so requires a strong tug to remove. If you're not sure, consult with your supplier before getting too forceful...

[SpecTP]

it's a friction fit, you may need to soak it a little to get it to loosen.