OK, I've been using V4L cartos for about a month and a half. I love the product but I don't much like the idea of inhaling burnt polyfill either.
I chain vape (i mean chain vape), I us manuals and autos during work, and a passthrough on weekends and in the evening. I store used topped cartos separate from those I just finish off and have no time/inclination to top, because I tend to mix flavors with the topped ones.
I often vape a carto for HOURS w/o topping, many many hard hits. Not recommending this, but I do - I'm busy.
I recognize when it's done - it's not a toasted taste, it's an off-taste. Not a burnt marshmallow - a just done marshmallow.
So reading this thread this evening I went into 6 never-topped cartos. I included one that I knew I'd kept at too long, as I'd been away from my stash. Pulled everything out and unrolled it in good light.
After looking at those pics I expected to see a lot of discoloration, and would have reported it - I really do use a cart hard and long. But all but the one I'd overdone were simply white. Tiny bit of very light, almost invisible beige on one, at the very inside. (I unrolled the paper tubing as well as the batting - the very faint discoloration was just on the paper.) No way that it was dark enough to indicate that those were "burnt", and I dunno if it was a very light scorch or flavor-stain. On the one that I really overdid, there was a small scorch mark on the paper, medium brown, and a bit of the batting was very faintly discolored. And I KNEW I was killing that one, I really tasted it. I expected something like those pictures.
Nothing remotely like.
So I dunno what's going on. My adult kids note that I vape constantly, and are interested in how long a cart lasts. I smoked for many, many years, and I treat one untopped carto as equivalent to 3/4 to 1 pack of cigarettes. That's a lot of hits.
No one has any need to believe me, but I'm not a shill for V4L, or a groupie in denial. That's just what I see, straight up.
I also have a stash still unwashed from week one of
vaping. Undid some of those and none resembled the mess in picture, but some were definitely scorched. I remember the learning curve, and also "getting it." No experienced vaper who's trying something new wants to feel like they're being dissed or treated like a noob, but something is off here.
I also opened up a few blanks that I'd loaded w/ Tasty Vapor and Ms T juice. Hard to tell as the juice itself in those was dark, but I saw what might have been a little more discoloration - could be light scorching, or just stain from the flavoring.
Something's not right here, I don't know how folks are scorching these so badly.
I'm sorry that anyone felt put down in the forum; complaints and concerns in there are consistently responded to with interest, courtesy and disarming honesty, and I'm in there very frequently and read most all new posts every day.