So i got my Ace headset around January and have been absolute loving them, the ANC is super sweet and the sound too. about a month ago i slid my fingers across the headband and noticed there was a sharp bumb, still not sure what it is, as i dont really wanna take them apart. My question is, if this is reason to send them back, ive been very careful with them as its an expensive piece of electronic for me, and im afraid the sharp thing will eventually pierce the headband.