Stubby,
I wouldn't look at it s a mistake. Human physiology is different for each as well as what about analogs satisfied them. It appears to be no doubt that its more than nicotine. For some the nic is the major thing, others seems not so sure. If I don't toss in a mini snus I'll vape constantly , or it seems like it. If I put a mini in, It can be threre for 2 hrs and I'll only vape abt 1/2 my "norm". Putting a dissolvable stops the immedate urge to vape, but I still want something. So I vape. I guess I'm used to getting what I'm missing from the analog that way so I subconsciencly return to the PV.
So, it appears to be a balancing act for the individual. Some dont mind vaping all day constantly. I wondered why, as OlderThanDirt did, and we have similar results.
I'm guessing, since I cant prove it, that there is something in the raw tobacco that has this effect. Dissolvables have the nic and don't work for me the same way. snus, even in the mini portions has the raw tobacco still present even in the low nic snus. I have to discount Camel SNUS out, although it does help some, because its produced so differently than Discreet and Sweedish type snus's like General Mini Mint (white portion) which work well.
I hope this helps explain a little better and if you feel you failed with the PV , you may not have just found your " balancing point" as your system is more sensitive or your awareness higher than others.
DVaps testing proved the nic is there, but at the same time raised other questions and I see all this input form others as great sources to compare to as "why?".
Good luck. Every analog you don't smoke is a +.
Edit: Stubby, if the snus helped, have you considered vaping snus juice or tossing a snus in your bottle of eliquid? TB made a vid on using snus to vape as have a couple of others. That might be the ticket that solves your issues.......and mine too come to think of it.