I bought a Bluetooth transmitter and wireless Bluetooth headphones for my Etrac. Both connect and sound comes through but if I leave the detector still the threshhold sound fades away to no sound at all. The funny thing is if I lift the detector and hold it horizontal it comes back on or if I touch and hold the connection at the detector or the connection at the transmitter the threshhold stays on like it’s supposed too. When I release it again goes silent until I start to swing the detector. Any thoughts on what might be going on. I attached a picture to show my setup.