OK! Looks like things are definitely improving on the vapor front. If I may, I'd like to suggest some refinement to your technique which employs the pulse/pause method I suggested earlier: rather than repeatedly removing the stem from your lips after a 5-10 second draw (allowing the heater to re-up and cook the herb some), try leaving the stem to your lips for the entire sequence i.e., with stem to lips all-the-while, draw 5-10 seconds, then pause a few seconds, then draw again and then pause again...until you've had your fill. During a pause (w/stem to lips) you may lightly pull in a small amount of air thru the corner of your mouth - just enough to avoid the sensation of lung starvation. A simple breakdown of the start/stop sequence outlined above puts the convection aspect to work while drawing (start), and the conduction aspect to work while pausing (stop), adding in a few breaths of air in between just to keep the lungs happy, and again I emphasize all-the-while maintaining stem to the lips. Less of a workout on the arm too - less up and down up and down. Also, while vapor production was still apparent well into your video session, it was progressively thinning. This gives evidence that the low-temp actives in your herb at that level were getting spent, informing you that to reinvigorate production you must bump it up a level in order to activate more of the actives that remain. To keep vapor density flowing pretty consistently, I have found it effective to elevate the temp level a notch or two every other sequence. Of course, load your bowl with as little or as much herb as your session will require using this method. Following all that, you should discover that your entire 12 minute vid session time will be cut by at least half or more. In all, less time, less workout on lungs and arm. It may seem a little clumsy for you at first (being new and unfamiliar), but I think this method will set a new standard of performance and ease for you. Give it a shot!