I'm measuring 250F grate temperature with the CyberQ II pit temp, checked it against a Maverick ET73 and even put the thermapen probe through the open rivet used for my temp sensor entry. all are with in a few degrees of each other.
2 - 22.5" WSM , Weber 22.5 Performer and a very tolerant, very Beautiful Wife!!
Black & Blue Thermapens!!
KCBS CBJ & TC #55078