Grainfather S40 - Temperature probe hot spot?

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Perth, NOR
Anyone else brewing with an S40 found that the temperature reading can be a little off, especially when chilling post boil? I'd previously noticed that it might be a couple of degrees off, showing 22 while thermometer on the other side read 20. Last night's brewing had it showing 22, while it was actually closer to 14 (props to my immersion chiller for that).

Lesson learned, make sure I do multi-point reading when chilling, but still a bit annoying. Is it a known hot spot, as it's near the heating element so being influenced by that, or should i be thinking the probe is on the way out (I've only had this since start of the year so would be a little annoyed at that)?

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