Exuro

Apologies if this has been reported before, I certainly couldn't find it anywhere. (Edit: Actually, I just found at least one user in this thread mentioning it!) Originally I had no issues, but recently I've started having an issue with the volume wheel on my headset. When I try to adjust the system volume using my Virtuoso volume wheel, it just erratically changes up and down. I'm unable to get any consistent behaviour out of it. I'll try to nudge the volume down and it will rapidly jump from 100, to 12, to 0, to 85. It's very bizarre. I've only had the headset for a couple of months.