I recently received a Parker 21 with a bent nib but in otherwise good shape. I want to remove the shell, but my modest heat and counter-clockwise unscrewing has not produced any results. According to Richard Binder's site, I've identified this as a Mark II where he says:
"In 1951 Parker released a revised version, the Mark II, whose nib and feed are held tightly in the bore of a redesigned shell, now an integral part of the ink delivery system. The feed still fits into the bore of the connector, but it is no longer a press fit."
I must confess, I don't understand this.
Thanks in advance,
Steve