Absolutely, thanks for the update.
It's nice to know there are people that take pride in their work too, or maybe it's OCD
![wink wink](/forum/images/graemlins/default/wink.gif)
, but either way... if you have tested it at every point up to the demarc with multiple calls, then the customer and vendor can't say there is any lack of proper troubleshooting on your side. The problem is after the demarc = customer wiring and or CPE.