About a better slice, you should look into this thread :
https://groups.google.com/forum/?hl=fr#!topic/kisslicer-refugee-camp/ZMuIrtn5MfoYou can use Kisslicer to slice a bfb file, than you can use Codex to encode the file to a CUBEPRO file and if you rename the file to CUBE you can print it.
The only thing is find the right lines to add to the header of the bfb file before encoding.
Here's the header of an original cube file decoded :
^Firmware:V1.10
^DRM:000000000000
^Material: 16.081
M227 P100 S100
M107
M204 S150
M104 S260
G4 P30
M228 P0 S100
M108 S25.0
#Vector T22
M103
I have a Cubex and I can't help you more than this, you have to do some tests to find the right lines to use into the header and the right parameters to use into Kisslicer.
Happy printing.