So the title pretty much says it. Running with g4 since it came out in Europe, before that dex7, so have some knowledge about the things. Past 6 months have been really hard sensor-wise 1) Multiple failed sensors (goes to ??? in 2-hour calibration phase / even after several restarts). 2) Sensor will only last about 8 days (so 7 days + restart, runs 1 full day after that and then its ??? all day long) Transmitter is brand new. Has anyone else seen anything similar?