I have almost had it with the AT8410s as they keep requiring adjusting of that tiny damn screw. I have sent three pairs back to AT and they keep sending me brand new ones, but always end up with the same problem. I have tried everything from loc-tite, cement glue, super glue, and soldering. Nothing will hold it tight. I keep telling AT that this is the cause of bad engineering, and they agree, but nothing has been done!