Hi guys, with my junsun V1 pro I have a strange issue with the volume the unit doesn take full control of it and the phone keeps the volume at about 40% I can put the volume in Max on the phone but as soon as I touch the volume on the head unit it goes back to 40% this makes it hard to balance the volume.I just want the unit to be the main volume selector.Any help? My phone is a Xiaomi 12t if it helps.