If you drove all the way up to Jefferson and still don't get any decoding, then we can rule out an issue with the Netcong subsite, as you would've had strong signal from the Bowling Green subsite up there. I know for a fact that the Bowling Green subsite is fully operational with no issues, so we can rule out a system/site issue at this point.
If one or both of your SDS are receiving the Morris County (4BA) system just fine, and are also receiving the NJICS West Orange cell just fine...then the issue would seem to be the programming of the NJICS Morris cell. I understand that you already cleared it out and redownloaded it, and that it was working fine until recently, so I'm a little baffled myself at this point.