Just got a crank power meter. And my 6 mo old Kickr core v1 shows about 10% too much Wattage. Spindown runs 20s before stopping (max value?) - did a factory spindown. Says brake factor is 0.90 - which is out of spec and generally reported to overestimate watts. After this a standard spindown calibration is 19.2s, but I still have 7-8% “free watts” on the trainer.
I did create a support case
How did other solve this ? Is the only solution a swap ?