Steve,
My only suggestion to you is do not pay any heed to instructions that Montblanc retail staff give you. Those people are a bunch of drooling monkies who don't care about you or your pen.
Please, please, please email or call the Montblanc USA's technical service center for questions like this. I've attached a screenshot of their info.
service@montblanc.com
Just don't want you to damage your prized possession
Todd