Because of the way the AK bolt works, the recoil tends to be up and slightly to the right. This is not so readily apparent on semi, but it is on full automatic. This slant angle makes gas escape up and to the right first, hence, pushing the gun down and to the left, thereby crudely working as a compensator or brake - hence “slant brake”. it does NOT funtion as any kind of flash hider.
It’s ok.
It does look a little more canted than usual, but not a big deal.
FWIW- recoil to the up/right is from being fired from the right shoulder. Take the brake off and fire from both left and right shoulders and you will clearly see the muzzle rise and track away from the body. It’s classic recoil effect and has nothing to do with the operating system.
Nope, won’t hurt it in the slightest. My OCD has always been to try to get them tight as possible, but if it won’t go one more rotation by hand, than that is as tight as it gets and as tight as it needs to be.
For the TRULY OCD, you COULD stone the BACK of the brake on a true stone sharpener to get it to finish going around the rest of one more rotation and just barely lock the pin, thereby making it rock solid tight - but of course this is totally OCD, has no benefit, and takes a lot of time to do. Consider it like masterbation - you’d only be doing it to make you feeel good.
I’d just leave it as is and drive on - shoot it, enjoy it, have fun.