Are you by any chance an engineer Zarjaz

?
The great engineers left about an hour and a half ago and completed the wiring of the new cable coming up our drive.
They managed to luckily find a spare pair on the frontage tee cable and shared my confusion as to why the engineer who marked the new route a week ago 1. Didn't track the cable and 2. Put the Manhole Mark on the left side of the drive instead of the right side. There were definitely talks of getting another dig team out if there were no spare pairs.
So far, the connection stats haven't changed much but the SNR is a lot more stable and the line is almost silent (Touch wood the problem is fixed). One of the engineers did kindly reset the SNR and interleaving which has brought the line up to 20 meg with a 6.9dB Noise Margin.
They did exactly as you mentioned Zarjaz - They put a joint on the Frontage cable to connect the new cable (I think he put a really thin version of that black fiber manifold - without the fiber obviously on the cable to isolate it in the manhole) and also put a brand new shiny BT66 box above the duct mouth (Hence the question at the beginning of this post).
http://imageshack.us/a/img198/1215/img0036vg.jpg
Fingers crossed the problem is fixed permanently. Thanks for everyones' help in this thread!
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Downstream Upstream
Connection Speed: 24276 kbps 1211 kbps
Line Attenuation: 16.5 db 6.4 db
Noise Margin: 1.1 db 6.2 db