Mine was just a little bit loose. If I tilt my head too much it felt like it'll fall but it actually won't.That's tempting, as I also find mine rather loose and it just sort of sits on my head, rendering the headband very uncomfortable.
I did't notice any sound change but maybe because I got a good fit with the original headband.Did the sound change for you with the higher clamp
Nope, but this is definitely something you'll have to consider if you plan to use the hybrid headband. I just take the leap of faith and bought itare you missing the horizontal swivel at all?