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Probe-zeroing accuracy — am I expecting too much?

Getting ±15 µm repeatability on touch probe zeroing. Spec sheet implies ±5 µm. What's normal for the V2-10?

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CycleCNC

Bought the touch probe accessory with the V2-10 last month. Probing the same precision-ground reference pin five times in a row, I get:

Run 1: X=0.0123  Y=-0.0098  Z=-0.0042
Run 2: X=0.0131  Y=-0.0091  Z=-0.0048
Run 3: X=0.0119  Y=-0.0103  Z=-0.0039
Run 4: X=0.0128  Y=-0.0094  Z=-0.0045
Run 5: X=0.0122  Y=-0.0100  Z=-0.0043

Spread is roughly 12–15 µm across the three axes. The probe spec implies ±5 µm. I'm using the slow-feed routine (200 mm/min approach, 20 mm/min touch).

Is 15 µm just what the V2-10 + this probe combo gives in practice, or am I missing a calibration step? The probe was zeroed against the master ring on first install.

Taggedhelptooling