Either I had a super bad luck, or I believe that Loop1080 may have a flaw with adjustable gap mechanism.
I have two of them for last few days and they worked nice for me - I felt no need to adjust them. After few days I simply wanted to try how this adjustment mechanism works - not that I needed to, I just wanted to check it out.
So I put in the key that was bundled and try to turn - it turns a little and then the key spins inside the screw. I tried it few more times in both directions (I thought I may have hit the limit on one side), but what happened is that after few turns the metal screw actually lost all edges, they smoothed out by using provided key.
And let me repeat: I wasn’t using much force. I wasn’t trying to overtight the yoyo. I tried no such thing and I was careful. I just wanted to see how this mechanism works.
Similar thing happened on my second yoyo, but there I only tried to turn it twice, so my screw still has some edge - I hope to be able to adjust it with different key when I find one.
So to summarise: I believe that YYF picked extremely weak steel for this mechanism and also that the key is a tiny bit too loose inside - it doesn’t provide a fit tight enough inside that screw, so it breaks it.
It pretty much defeats the purpose of having this mechanism there in a first place.
I would still recommend this yoyo of course - I love it as I’m making a really quick progress with 2A (something I tried for the first time now), it also looks pretty good. So I guess the lesson learned is: don’t use the key that was bundled with it - find another one, that will be a better fit. And be careful, a lot.
P.S I know it’s just one opinion, so you shouldn’t rely on it as if it was an ultimate truth. Also, I would love to hear from other owners of 1080 if you guys had similar problem. How it was with 900s?