Aha! Seems its height adjustable if you want it taller or shorter. Slide the sleeve down to whatever height is preferred. Not sure if it was designed with this in mind but I think it will work for people that want to try it.
Yep! You can definitely play with how far you push the stem into the body. So, by extending the stem out, you essentially get a longer air path. This of course changes the distance between the heater and herb chamber, so the heat will be slightly different as well.
EDIT: I Just realized you said "sleeve" not stem. heh.
It can be used this way without worry of damage, so go ahead!
Only the first batch gets two heater modules, right?
That's correct, a bonus for being an early adopter.
@Fat Freddy , Good Idea!
Heaters:
The one with the thicker ribbon, less spirals, is the hotter heater. Just remember, less is more, ha.
Stems Loading:
I used the cut ends facing out (facing the heater module, opposite to what I suggest in the tutorial) for like a year, no issues. I found it to be fine.
BUT, I did eventually think that maybe performance was marginally better with the screen facing the other way around, with the cut ends facing inwards.
As an alternative to the stem sandwich, you can place the top screen inside the body instead. If you look down the hole where you put the stem, you'll see a little step down where the glass stem stops, just before the heater module. Using a new flat screen, or you can flatten a domed screen, cut a screen to size so that it fits flat against that step down and snug in the hole.
Cut the screen just a tad over-sized so it stays put. Now, when you load the stem and push it down into the body, the glass stem makes a seal against that internal screen, sealing the herb chamber.
This would be preferred for those who don't want to deal with removing the stem screen for loading.
But I personally prefer the two screens in the stem. Easier to clean, and gives more adjust-ability.
@delloy , Tracking info is often wonky between countries, it may appear to stay at a sorting facility or customs for days, then all of a sudden arrive at your door. I see this happen all the time.
@Fat Freddy , These screens are thicker than your usual metal screens, and tend to keep their shape for a very very long time. I had been using the same two for more than a year before switching, and even then they were in perfect working condition.
Thanks for the feedback so far everyone! Because this is a small batch product, I will be listening to all suggestions to see if I can make improvements in each batch.