I’m not familiar with GGG. As I’ve said previously, I rarely use the RFX ambient probe as it’s been months. I rely on the Tel-Tru that Dennis includes with the unit. I’ve noticed some drop off in temp accuracy with that too, but have started taking it out every 3 months or so, cleaning the carbon off of the probe with SOS pads, and recalibrating it in boiling water. The accuracy of the dome temperature is close enough for everything I cook. I monitor the actual meat with an RFX wireless probe and have had perfect results every time. As Dennis has said on here as well as his videos, once you get the airflow down, you don’t need the gadgets and that makes sense to me. Sent from my iPad using Tapatalk