What are the specific steps and considerations required to accurately calibrate a 4iiii Precision Pro power meter, and are there any scenarios in which attempting to calibrate it oneself would be inadvisable or even damaging to the device, necessitating the expertise of a professional? Are there any unique calibration challenges or requirements that are specific to certain types of bicycles or riding styles, such as recumbent bikes or high-performance road bikes? How does the calibration process for a 4iiii Precision Pro power meter differ from or overlap with the calibration process for other types of power meters, and are there any best practices or lessons learned from the community that can inform the calibration process?