Procurve 530 Max dBm varies with software version

[R Landgraf]

Has anyone else notices that the max dBm for both radios on the Procurve 530 AP varies depending upon which version of the software is used? For example with no other changes using version 1.19 radio 1 has a Max Tx Power of 18 and radio 2 has a Max Tx Power of 22. Going to version 2.10, 2.15 or 2.19 causes the Max Tx power of radio 1 to drop to 16 and radio 2 to drop to 20. Thanks for your help