Are you reading those temps from the remote or at the transmitter at the pit? Which Maverick do you have? I ask because the ET-73 can lose communication to the remote and it appears to be steady when it actually is reporting the last temperature it had been transmitted.
Jim - Another transplanted Texan
Former KCBS CBJ
Large and Medium Big Green Eggs , Black 18.5" WSM, Blue Weber Performer - Stainless, Green Weber OTG Kettle , Brinkmann SnP Pro, and a Stainless UDS. One retired Portable Kitchen grill.
Red Thermapen, Maverick ET-732, EdgePro Apex Sharpener.
Avatar is the original 1951 Weber Kettle