Don't feel bad... I do not particularly enjoy drippers on the Grand either. I think the 22mm models look somewhat top-heavy, and the mod's door will not slide up. I have an Origen v2, and Oreico Storm A. Both have the Origen v2 BF'er pins. I usually need to almost entirely close-off airflow to get the nice mouth-to-lung hits I like on either.
There were no rebuildables when the REO hit the scene.. The mod was designed for atomizers, and does a damn good job of running them

. I always dreamt of a rebuildable 510 size atty to run on the REO.. The dream was realized with the Sophia by Leo RBA. It's actually designed for a carto tank, but with the short-body, is about as small as the standard 510 atty.
The Sophia is small, lightweight, has a ceramic cup that enhances flavor IMO, and has a built-in "beck" in the tube which makes for an extremely small chamber. It also works well as a "spit-guard" against hot juice, and is in it's self a flavor enhancer also. She also has two small air-holes above the 510 threading, which are adjustable. Can you tell that I like it?
I run mine with a drip shield since Sophia does screw-apart at the base. Also, because it looks great.

Sophia squonks well, and gives me a full, rich, hit.

The throat-hit is great, and the flavor is off the chart.

I do not want to use any other atty on my converted VV Grand...
ΣÎΦÎÎ Repairable atomizer for tank
http://www.e-cigarette-forum.com/forum/euro-suppliers/426015-leo-attys-mods-drip-tips-tanks.html
http://www.e-cigarette-forum.com/fo...rebuildable-atomizer-leo-discussion-tips.html