I am on CM10. Not able to keep a strong signal though. Still haven't seen 3G. Goes from 4G to 1X and back. Setting is set to LTE/CDMA prl
I would recommend flashing back to stockish ics and documenting the signal there. CM10/AOKP don't mess with the radio so I don't think your signal issues would be caused by that... but thats just my thoughts.

I'm on wifi so I don't know about the signal, though.
. I'm going to play around with the P930 CM10 and see if I can steal the right files to make it work. I had good luck with picking a few .so files. I just need to find the right ones to get them all to work together hopefully. Github being down is really slowing down this progress.