My new backend only has the engraving partially filled. I'm tempted to take the finest point sharpie to color it in.
Here's a comparison shot of the oldstyle backend (left) and the new one (right):
The threading seems different between the two. It doesn't seem to extend as far up on the oldstyle.
Obviously the battery charger - or what ever it might be - doesn't help the QC... Heard from a fellow member who just got his unit along with 3 extra batteries. 2 of em are not working properly...
Unit itself has a backend issue also - the heat dial or connection to the heater are not ok or not having been adjusted. Level 1 heats up really high, even higher than level 5. Can't say more, but I'm sure he will report here when he's got time.
Already written to both my retailer and HL, haven't received reply yet. I can consistently get the load almost black at level 1 and I'm getting a smokey taste even at this temp. Would say there's a minor difference between the levels but it's far from starting at 130ºC that's for sure (like 60º off at least)... at this point I'd say is working more in the 195-220º range rather than the advertised 130-210º and is far from the 180-190 experience I'm used to but this is being said without any reliable measuring tools at hand.
In case I may be using it improperly and as an easy reference I've never got the ABV as black in the Mighty at 210º as I got this at level 1, tried various grinds and fillings (may post a pic or two when I get home).
Guess many others are in my same situation but very frustrated thinking about a return less than 24h after unboxing the "expensive" model and while still awaiting a replacement batteries order... At least my Crafty worked for a few months before requiring service.
The device looks promising and very willing to change my opinion but so far can't say it's been a good start.
Been sweeping the topic and I'm almost sure I'm not the only one with this issue and that many others are confusing the excessive heat with efficient extraction and joint like hit but they don't have many other vapes to compare it to. Unless I didn't learn shit in the years I've been vaporizing I'm sure no visible vapor should be seen under 160ºC in normal circumstances so if your device is pulling out vapor under lvl 2.5 you should start thinking about a possibly faulty or at least imprecise device.
Hope not many others may find the same problem but for those thinking in getting a Ti version for increased reliability, think again.
P.D. Will keep investigating and eat my words in case I find out I'm wrong.
@MoltenTiger, @Vapor_Eyes, @Baron23, @jabba and @freebigga thank you very much for the help.
Tried to register my hopper at GH.com but they ask for an "ID code". Since I got my device from VapoShop I never got this... Does anybody know how should I fill this field? Anyways I've already sent a message to GH support so guess I'll have an answer soon.
Now time to cope with the frustration
Oh wow, memory lane, I think that was warranty #2 for me. Officially a miscallibrated dial, fixed w new backend, in a working hopper the different temps are clearly different.
This is great and spot on.
One number is on the box and the other number is on the GH itself..near clicker
atleast they honor their warranty, try going with storz and bickel and you'll really see what a bad warranty service is.
At the risk of sounding a bit sophomoric and cheesy...I do believe about 4.20 is my optimal Hopper hitting level...native
... But in all seriousnes ... after many long hours at the GIM with my bird I decided ignorance is bliss, Matt and Trevor know alchemy FINE no big deal, I don't know alchemy and don't particularly want to learn, especially since I do know Trevor and Matt know it and use it to make grasshoppers for me. 
![:\](/i/s/hmm.gif "Hmm :\")
