To measure the distance between nozzle tip and the probe pin, attach a piece of paper to the print bed using some tape.
Now move the nozzle down until it presses into the paper and leaves a small impression. Move the printhead up and out of the way and use a marker to place a dot on where the nozzle left the impression.
Make note of the current XY position shown on the LCD. In my case, X115 and Y135.
Now jog the X and Y axis until the probe pin is directly over the dot you made on the paper. Note the new X and Y coordinate on the LCD. In my case, Y159 and Y152.
If you subtract the second coordinates from the first ones you will get a difference of X-44 and Y-17.
These numbers will go into the G31 X and Y command in config.g
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