I got a BakuSteel Haos Alto Brontes and one of the arms' springs wasn't tight. So I unscrewed the screw holding the arm in, (The first attempt I was pushing so hard to get it unscrewed I slipped and jabbed myself with the screwdriver and almost needed stitches) I tightened the spring, (VERY hard to keep it tight the entire time you put all the pieces back on) put everything back together, and screwed it back into place.(screwing it back in was 9000 times easier than unscrewing it). The only thing is now the OTHER arm is loose somehow. I tried unscrewing it to try to fix it like the other but stabbed myself AGAIN with it, this time not so severely. I didn't try again.
Wow. I would just ignore it or buy another if that happened to me. My Core Alto Brontes' magnet-latch-thing kept getting stuck (I would take it off of the card, but the latch wouldn't spring back up), so I just moved it back and forth to wear it down a little, so it would spring back. If it continues, I might have to take some sandpaper to it...