So according to what you said,
Wings
Feather of Condor = 1 - 60% (60% max rate)
Wings level 1 = 1 - 100% (100% max rate)
Wings level 2 = 1 - 90% (90% max rate)
Wings level 2.5 = 1 - 60% (60% max rate)
Wings level 3 = 1 - 40% (40% max rate)
Wings crafting would always be the rates you mentioned? for example I have 14% on the client (chaos machine) for wings level 2.5, but in truth that 14% is 60%?