Wavetrac LSD

Just had a Wavetrac installed by a reputable shop local to me in Mississauga, Canada. I'm experiencing a moaning sound / binding vibration through the drive train when I initially start driving and making turns at low speeds. Once I get some heat into the diff it seems to be gone. Also there are no issues / vibrations when driving in a straight line even when the diff is cold.

I just got the car back Thursday so I still need to more driving / testing.

Wondering if anyone else has experienced this and what the solution was.

I'll call the shop on Monday and get there thoughts.

Thanks