true that. fucked up threading is just an inevitable reality with metal grinders. you can use extra care, but over time it will happen anyway. most of mine go early because i tap it with a hammer to get extra kief and stuff that gets stuck in the screen but i swear to god this new grinder collects more kief than any other one and tapping is completely unneeded. i have no idea what a space case is though.
space cases = possibly over priced grinders
Mine cost about $100 but I say it was worth it. It's a solid piece of metal alright, well crafted for sure. I work with machined metal so I can actually say that from a professional point of view
I got a 2 piece medium for $30. The 4 pieces are a lot more expensive but they are quality and I hear of people having them trouble free 8+ years
See attached pics... 1 large 4 piece titanium, 1 medium 2 piece titanium..