Heatermeter got wet. RTD re-calibration?

My heatermeter (and Heatermeter Buddy) got caught in a brief shower a couple of weeks ago.

It didn't seem like it got too wet but yesterday when set up again the RTD probes on all 3 jacks
were reading about 28F high. I confirmed it was the Heatermeter by plugging the ThermoWorks Probe
into the ThermoWorks ChefAlarm. And used it to watch temps and finish the cook.

It did seems like a fixed offset but I haven't checked for linearity.

Has anybody gotten theirs wet and/or had this problem? Is the moisture driven-in to the resistors?

Do I need to replace the 10K 1% resistors or can I configure an offset or calibration in the configuration panel?