arf - Have you tried smaller loads or pulling faster? If your not getting much airflow then you can also try a more coarse grind and try not to pack it down. Ideally, I think you should be able to pull freely through the material - especially at high temps.
I have had my fair share of combustion, I won't lie. I under-estimated the HI at times (early on) & was unfamiliar with its ways & also had never owned a log vape. It was obvious I was no jedHI. The
JedHI Trials, were no cake-walk. No sir!
Once my time had come (I was in waiting of 'the
trials' for a bit over a year, so I was prepared once the time came), I dedicated all my free-time to understanding the Force & learning how to properly wield my HIsaber in all sorts of different environments/situations/draw-speeds/water-pipes/etc. After dozens of sleepless nights, many Grunge Off soaks, & staying true to the task at hand .. I finally succeeded in passing the jedHI Trials, & can proudly say that I am one with the force.
The HIsaber is capable of more than you know, my Young Padawan(arf). Enjoy it you will, & videos you shall make. I'm still learning it's amazing abilities months later. I'm soon to acquire a VVPS myself, I hope. However, I love my HIsaber all the same with its current power-supply(even though it's temperature does run a bit on the
HI side ..IMO)!
May The Force Be With You, jedHI Arf