144 And 145 Logo Removal For Clip Replacement

[Divebunny]

I have just bought both a 144 classique fountain pen pop cap (engraved) and 145 classique/chopin? fountain pen(broken clip) and would like advice on removing the logo to swap cap barrel on 144 and put a new clip on 145.

My wife has a 163 classique rollerball and the logo just unscrews quite easily, whereas my 162 legrand rollerball doesn't.

Any advice for a newbie addict gratefully received!!!!

 

Thanks :-)

 

[Avantix]

I just looked at my 149 and 146 and I think there is a screw on the underside of the cap. The ballpoint has a screw in star whereas the fountain pens don't. Feel free to correct me everyone.