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 Stubhttp://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.