In the interim, if you get a chance, it would still be a good idea to sort out the extension wiring, i.e. remove the ring wire etc. I believe fitting an iPlate http://www.shop.bt.com/products/bt-iplate---bt-broad... might do a similar thing if doing any work on the wiring is inconvenient, although I've never used one...
Your only problem might be that the NTE5 shown in your photo takes machine screws and the longer screws supplied with the iplate are probably self tappers. However one would have the same problem if trying to fit a filtered faceplate also. It's not a major problem but the brass female threads in the NTE5 might get a little chewed up.
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