Hello everyone! I am somehow stuck in the disassembly of a Salz "Pan Senior" button filler. I am uncertain as to how the nib unit is sitting in the pen section. Is it friction fit or srewed in? Would anyone know? The normal slight hammer bangs on the knock out block did not do the trick as they would normally. Trying to unscrew the nib unit like in a Pelikan did not either, nor did some heat applied. To know for sure which way to go would really make things easier. (I have been very careful with both, heat and also with soaking, because I do not know what material the section is made of.) Can anyone enlighten me either on how the nib unit sits in the section or on the materials? Oh, and by the way, when would this not so common pen have been produced? Thanks, Amelia Edit: Maybe this post should be removed to the repair section? It's just that when I asked for help with a Mentmore over there, I did not receive any answer at all. So I thought, the "specialists" for smaller brands would possibly be found in this part of the forum.