One of the nicest things about the Montblanc Rollerball is the feel of closing the cap... it is smooth and buttery!
Sadly, after a while, that smooth, buttery click fades away as the edges wear out. A short time after that, the cap has trouble staying on!
Instead of shipping your pen to Montblanc, waiting 8 weeks, and paying an insane amount to fix it, handle it yourself in five seconds.