Hey... your percentage is about right for oem motors. Keep in mind that poorly position fan blades in relation to the shroud can cause high amps ..."chopping".... Also improper run caps even if they check out on mfd check doesnt always mean capacitants are performing in high temps, when in doubt change that 2 dollar part. Even fla is bad on a been static for a while unit. An option you have as a busy service tech who is waiting and waiting for a questionable fan motor too fail is to remove power and wait for blades to stop then apply power for 10 sec then remove power again repeating these steps 3-5 times. If you have bad windings, or run cap that motor will usually fail. If bearings are bad you will know also.
Hope this helps.