Another note for those of you using 510 cartos on the Buzz:
I found that I get better results with a little more airflow than the 'standard' 901 -> 510 adapter allows for on the Buzz. I drilled a small hole in my 901 -> 510 adapter, and I'm much happier now. I 'regulate' the additional airflow by putting a small slice of a 510 carto condom around the adapter, and I cover up more or less of the hole to adjust the flow. This is working well for me.
On that note: does anyone know of a supplier that offers a 'different' 901 -> 510 adapter than the standard issue adapter that Buzz sells? I just received one from Altsmoke, and it's identical to the one that shipped with my Buzz, unfortunately. I'm specifically looking for one with a little more thickness and a little less height, if that makes sense - more like the standard issue 801 -> 510 adapters that everyone sells. I tend to like the draw better on the 801 ->510 adapters, so I'm wondering if there's anything else for me to try out there.
Confusing? Perhaps a bit. ;-)