Are you using fan splitters or hubs to connect, or is each fan directly connected to a mobo header? Mine gives me strange results if I connect PWM fans via a 3-pin splitter cable (don't ask why one would do that - it was the only splitter I had on hand. LOL)
Also, fwiw, I don't think the 'Optional' fans show in Fan Xpert at all, you have to control those via bios.
Asus RIVBE • i7 4930K @ 4.7ghz • 8gb Corsair Dominator Platinum 2133 CL8
2xSLI EVGA GTX 770 SC • Creative X-Fi Titanium • 2x 840 SSD + 1TB Seagate Hybrid
EVGA Supernova 1300W• Asus VG278H & nVidia 3d Vision
Phanteks Enthoo Primo w/ custom watercooling:
XSPC Raystorm (cpu & gpu), XSPC Photon 170, Swiftech D5 vario
Alphacool Monsta 360mm +6x NB e-loop, XT45 360mm +6x Corsair SP120