Thanks for all the comments here.
I have an Aurora Optima Orange Flex and just recently noticed that the cap has cracks in it. You can't feel them with your finger, but you can see them. I honestly have no idea how, but my best guess is that it happened during one of the times I was carrying it in my pocket at work. I emailed Aurora (firstname.lastname@example.org) and they got back to me but only to ask where I lived - and then stopped responding after I told them. From what some of you have said I suppose this makes sense - you've given me the idea to contact Kenro so thank you! I'm hoping that will yield some results on Monday.
It seems like I'm not alone in feeling a bit shy to really use this pen after having it break. Even if I get it fixed I'm going to worry about cracking it again. I wanted this pen to be my EDC but it seems like that was not meant to be
Just a quick update - I got my pen back today, and it looks brand new!
I spoke with Cary (the most amazing helpful guy ever) of Kenro Industries and he directed me to the Pen Service section of this website: http://www.kenroforyou.com. In all my searching, this site never came up, so I hope it's useful to someone!
I paid $35 for a repair consultation on April 2nd, which involved me shipping the pen to Kenro Industries in NY. I didn't hear anything from anyone, but almost 3 months later I have the pen back in my hands and it's like they created a new cap for me. Like others have said on here, communication is not great since it likely gets shipped to Italy, but the end result is incredible. I didn't pay anything beyond the initial $35. Thanks to Kenro and Aurora!
The pen arrived in a square plastic case within an Aurora envelope:
Cracks in the cap before:
Clean cap after repair: