Yeah well maybe some revision was made? Because I have twisted on this thing for an hour and it's going to snap off if I turn it any further I can feel the little nipple behind there twisting up. Either way I am having all kinds of disappointment with it since I got it a few days ago. I said weeks ago when I pre-ordered that if it just vaped as well as the arizer air I would be happy. Sadly I can't get it to vape anywhere near as well. The flavor is good but I can't get it to produce vapor no matter what I do. If I start the sess. on 375 and give it 5 long slow arizer air style draws I will get maybe one of those rips to produce vapor. Crank it up to 400, again 5 hoots...one makes vapor. Open it up and the whole bowl is baked dark brown and gone. .5 in...two mediocre rips. Chalked it up to anomaly and then proceeded to waste about 2 grams in it last night fighting for the 4 or 5 rips I got out of it. I don't know what the problem is. I pull slow, no vapor. I pull hard, no vapor. Flavor yes, vapor no. Got crazy and said fuck it I'll start a full pack on 430, have to get at least a few good ones ...nope, handful of draws, one good hit in the bunch. fried bowl. I am like ready to put this thing in the drawer lol. I have tried everything, full tight pack, full loose pack. ugh I live in RI and meds are expensive as all get out up here. I have wasted probably $45 in it in the last 36 hours. The quality of the unit seems great, I like the flavors it gives, comparable to the air. But the amount of vapor is just nada. Packed the same herb in the air on blue...356 degrees. Got 8 or so thick visible tokes. I'm losing my mind lol.