Exclamation Selected network (T-Mobile) unavailable

Since I updated to the latest radio xxlf1 (from xxla02) and CM11 build cm-11-20131223-NIGHTLY-maguro I have been unable to connect to T-Mobile services.

I accidentally deleted the /system partition - in clockworkmod I had mounted and formatted everything before I started the install. Later learned I shouldn't do that.

I rolled back to xxla02 and stock Android and the issue has persisted. Put the sim card in another phone and it worked fine. Interestingly the phone did recognize when a new voicemail arrived (but am unable to access any services)

Any ideas on what I can try next?