It's been awhile since that revision. Maybe a year? Anyway...
From Leaford:
They have small but hopefully crucial changes to alleviate some of the problems we've been having with high voltage batts and with high VG liquids. The heating
coils are now being regulated for a slightly higher ohm range, 2.6-2.8ohms, and have been raised slightly in position to seperate them from the high temperature silicon adhesive and o-ring. And a new tool has been introduced to the assembly process to improve consistency in the coil position. Lastly, the wick has been changed from 4 strands to 5 strands, which should help thicker liquids, like high VG liquids, wick faster. All of these improvements are exclusive to Bloog.