[Q] Bad Signal/Data

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http://forum.xda-developers.com – So...rooted/unlocked/flashed this app/all the good stuff before I activated my gnex. Well I activated it and have a sim card in now and the woman I talked to said something about the jellybean update. So I realized I flashed ParanoidAndroid nightly over 4.0.4 instead of 4.1.1. Is there any problem with this? Because I noticed every 5 minutes my data cycled though 4g/3g/1x/no data. So I flashed the 4.1.1 radios and it doesn't cycle though but I only have 1 or 2 signal bars of data on 3g only, no 4g. So my question is should I backup, flash back to stock(after finding the files), and take the up (HowTos)