USB Dual Bay Dock Won't Mount Both HDs

[adt1340]

XBian version: XBian 1.0 Beta 1.1
RPi model (512mb)

Problem description:

I currently have a Cavalry Dual Bay USB Dock that has both drive bays being utilized, set up in JBOD mode (Both drives mount just fine with my windows machine using this setup). I have media on both drives and would like to add both as sources for my media library in xbian, connected to the USB port on the RPi. The only problem is that when both drives are connected to the dock, only one of the drives (the one connected to Bay 2) gets recognized.

I have tested each drive individually in both bays of the USB dock and they both mount fine by themselves, but when both bays are occupied, the drive in Bay 1 never gets mounted.

Below is the link for the USB Dock that I own.

http://www.amazon.com/gp/aw/d/B0030MHL66

Any help is appreciated! Thanks!