

New Lamy 2000 Barrel, new dimensions?
So, I got a Lamy 2000 (1st Gen) used from eBay, unfortunatly the Barrel that was delivered with the fountain pen stopped working after a while. Since then i cant screw the knob in the back to fill it up with ink. Even using force wont move it much.
I just got a new Barrel delivered, but there is a difference to see and feel between the barrel and the grip part. The grip part is slightly bigger then the barrel, where they make contact. If I use the older Barrel, its flush to the gripsection and you cant feel or see where they make contact.
Is it possible, that there are two different generations with two different dimensions?