You need a proper kernel built for your device, as the hardware varies slightly from the regular mini. Also for proper cdma support, rom needs to be built with it and the original RIL libs from stock rom should be used. Latest updates I did to msm8930-common kernel should contain everything needed for the US devices. Shouldn't be too hard to get working for someone owning the device and has some experience with building roms.
Since you're on a cdma device, the following in build.prop should be changed from: