Recently received the Shield, Quartz Sensor, and Holder. First time playing with a QCM, more fun than I would have guessed. I am looking to carry out measurements in a high vacuum environment. I assume keeping the sensor close to the oscillator would be the best way to go. With that said, just wondering if anyone has operated the shield in a vacuum? Is heating a problem, etc. Thanks in advance for any feedback you may have had with this subject.