I've never ever once had a problem with a cyclone bowl being too loose or tight in the 30+ bowls i've gone through over the last 4 years or so.
I understand that it's not a precise science, but with your theory that means that those glass pieces might come too big and not fit, or fit too tight and break, etc.
Regardless, I would MUCH rather have them fit snug, than as loose as mine are. I'm really curious what other user's glass pieces are like. Otherwise I will try to make a video.... but just imagine putting it in with zero effort and it just wiggles around. Quite hard to use one hand when it's loose...always need two. Forget vapor bonging as the glass would fall out when I turn it upside down
I'm really jealous after seeing the youtube vid... i would if arizer would exchange the pieces for me.
Now i'm starting to wonder if i'm the odd one out? This is quality control...if they can't blow them consistent than they should check them through quality control and include the best ones that ARE snug. I'm not disappointed in the unit at all, just the 2 pieces that it came with that are a pain to use. Even if just one fit right i'd be happy....but both are as loose as a $20...well you know where i'm going...