BirdDog

Hey guys, So just recently joined the aviation world with the purchase of our new Sportstar and I have a question about a headset that I own. The Lightspeed Zulu 2. The headset was working perfectly on the first flight (Made a phone call over bluetooth, no problem) but when we hopped back in the cockpit the next phone call had issues. When I spoke, the caller's volume stayed really low and I missed a bunch of what they had to say for about 3 or 4 seconds and then it came loud again. very annoying as I really could not hear half the conversation. I have searched but can't find an answer to this little issue. :( Any ideas? Cheers John