Well, engineer has just left, got here shortly after 8.30am
His tester did show "high resistance on one leg" which he eventually tracked down to the UG chamber across the road.
He didn't do much to clear it, he put a tone on at the master and then tested from the chamber which apparently cleared it (?)
Replaced the SSFP as belt and braces too.
Hasn't affected my sync speed which to me says he hasn't made the line any worse, which is a positive.
Rudimentary stats as follows:
6. Data Rate: 20000 / 68715
7. Maximum Data Rate: 23341 / 69710
8. Noise Margin: 13.8 / 6.4
9. Line Attenuation: 0.0 / 16.4
10. Signal Attenuation: 0.0 / 0.0
Hopefully won't have any further issues, but I'm not 100% how the fault was resolved at the chamber, would he have to have remade the joint there?
Got a HG612 on the way too, so will at least be able to keep an eye on things a bit closer too..
Cheers
Samwise