Quick background info: bought Montblanc Jules Verne in F. Intially wrote great, then got too wet and FP dripped drops of ink within a week or so. Originally wanted M because they are generally smoother and less scratchy, so since I needed to bring the the F in for repair, decided to do a nib exchange for M.
I now have the M but it skips.

I tried writing at slightly different angles and it still skips, so it's not my hand position. Will this skipping problem go away after the new M nib "breaks in?" Maybe I suppose, since it took a week before my F nib started to leak drops of ink.
If I have t bring my pen in for repair again, what can Montblanc do to fix the skipping problem? Is a skipping problem, a dry pen issue?
Thanks for any help on this.