stoop - I've been reading a LOT about this model. The generic cart-zers I've been playing with the last week have polyfil inside, not rolled paper, so the issue may be mute.
From what I've read, tho, the common consensus appears to be, break the Kr808d-1's open and add a few drops of liquid (or, slowly drip a few drops thru the hole in the battery side), and let it soak in for half an hour or so before vaping. Seems that there was (is?) a problem with the factory only half-filling them so they're not wicking properly. (kinda like how your cart filler is still moist when you take it out of a 401 or 901 etc, to change it, but it isn't wicking enough to produce vapor).
Another tip I read about was to change out the cart-zer with another one if/when the cart-zer you're using starts to feel warm, and just rotate them so you never get them feeling really warm.
I guess the KR is meant more for relaxed smoking - take a few puffs, put down, take a few puffs more, you're done for 1/2hr type smoking instead of (smokebreak) chainvaping like you can do with 3-piece models. I've been using a cart-zer on my 901 battery with an adapter and haven't tasted/observed any evidence of the polyfil burning. And the flavor is really nice with these things - you can feel it hitting the back of your throat. I've been rotating 5 of the cart-zers for a week now and have been refilling/topping off 3 or 4 times each now. Only one has been tossed so far (and it was never a producer from the git-go).
You can do a forum search and read a lot more on the how-to's.
Hope this helps!
