Uneven Burn Question

[Flynnster]

Occasionally I find a stick burning a bit uneven, as I'm sure we all do. My question is, where do you put the side that isn't burning as fast? For example, do you roll the stick so the slower side is down, or at the top?

Does this even make a difference? I would think at the top you would get a faster burn as heat/fire goes up. But then again, all the oxygen to burn may already be used up from the embers below.

Help a guy out!