Thomas i think its very easy to underestimate the power of a vaporizer, Whilst i do not own a Volcano i do own both a Mighty and an Extreme Q and i used to own a V Tower years ago, if i had tallyd up 'greenys' from that thing on the side of it like an aircraft it would be looking like a ww2 aces spitfire.
I read on a study that was used to see the potency of vaporizers that a group was given 3 options: Placebo, 10mg THC and 25mg THC through different forms Smoking or Vaping and for some the 10mg vaped was just as powerful as 25mg smoked.
For me i only vape weed havent smoked in years, and i take breaks too where i wont use it for a few days or a week then start again , constantly resetting my tolerance and if i hit that shit too heavy when i first come back to it, it kicks my arse (despite at one point being a very heavy consumer of cannabis and used to its effects)
At one point i really did consider purchasing the volcano however i decided the V tower was good enough so went for the extreme q, now something i see that all these vapes have in common is that the filling chamber is quite big. There are going to be heavy cannabis users out there who will say " Ey yo man wtf that shit is small " , but for most people the filling chamber is large. What i mean by this is when you put too little of dry herb in the chamber your experience will be pretty crap. There will be a lot less vapour a lot less flavour and a lot less of a 'hit' will just feel like Air.
So, Thomas my advice to you would be to get some high CBD flower and try mixing some of that in place of your THC weed in it in order to use the regular bowl. The whip addition is meant to be just like the V tower/dabuddha etc although the volcano might be more efficient. Another thing i noticed is if you re-vape some weed later on the high is much heavier and stonier but not necessarily more psychotropic. This is due to some of the THC content being converted to CBN. Its trial and error really i have found with mixing in CBD herb tho it kept the flavour, the thickness and the overall pleasurable vaping experience , and i never vape beyond 200c either