Default [Q] CDMA/LTE wierdness

Hi all

I am rooted and S-OFF

I reverted back to stock from a known good working backup.

However, it looks like I don't get any data, unless I turn switch CDMA/LTE mode to CDMA mode.

I have tried all the tricks - ##7286#, updating profile/prl (was at 24017).

I know data works under Cyanogenmod, and I vaguely remember getting 4g on occasion. They are updating the towers in my area pretty quick.
It use to work on my good backup.

Anything I am missing?