New to the forums and this is my first post although I've been following these forums for a while and find them very helpful. I have a brand new Montegrappa Passione with medium 18K nib. I use Montegrappa cartridges with the pen. However, no matter what I do the pen will not write. I've switched between 3 different cartridges and have flushed the pen 3 times letting it dry overnight. I've let the pen sit upside down for a few hours as well as dipped the nib to try to prime the feed but it still will not write. When I prime the nib it rights a little, then stops and then nothing. However, when I flush the pen a lot of ink is flushed out. Does anyone have any ideas as to what the issue might do or what else to try? I also have a Montegrappa Ducale Grande with Medium nib and a Montegrappa Desiderio with Medium nib and both worked perfectly out of the box with no issues. Thanks in advance for the help.