I recently purchased a FTW 3 Ultra card and its magnificent,  the temperatures are very impressive but for some reason, on my custom fan curve, the fan closest to the front of the case will not comply.  Fans 1 and 2 will be at 20% as they should while the 3rd one will bounce from 0% to 37% constantly and makes and audible uproar and fan click about every second.  Any idea how to fix this?  I have the latest 30 series PX1, EVGA firmware, and Nvidia drivers.