2wire 2700hgv sync problems

Up till yesterday after bt had to switch my wires due to noise and corrosion, my router was happily syncing at the maximum speed and could stay up for weeks/months without dropping.
Now I get this (i live about 500 yards from the exchange, but I believe the wires may travel up to 1000 yards)
DSL Line (Wire Pair): Line 1 (inner pair)
Protocol: G.DMT Annex A
Downstream Rate: 4896 kbps
Upstream Rate: 672 kbps
Channel: Interleaved
Current Noise Margin: 6.0 dB (Downstream) 6.0 dB (Upstream)
Current Attenuation: 19.3 dB (Downstream) 11.0 dB (Upstream)
Current Output Power: 19.7 dBm (Downstream) 11.9 dBm (Upstream)

When I first plugged in after the bt engineer had finished, I was getting just over 5000 as the sync rate.

Due to the age of the the estate where I live, the only put in just enough wires for everyone, then 1 spare pair.
I have been moved onto the spare pair before when my original line went dodgy, now there are no spares left, so the engineer has somehow used one wire from another persons house and 1 from another (Not sure how that works)

Would the wires not being twisted together cause problems, or is there something wrong with my router or is my line just destined to be slow from now on.

With that attentuation, you should be getting the maximum sync on ADSL. It's difficult to give you an answer on the twisted pairs situation as all lines are different and they all behave in different ways. If I was you, I would give your ISP a call and ask why this has been done and complain if necessary.

Due to the age of the the estate where I live, the only put in just enough wires for everyone, then 1 spare pair.
I have been moved onto the spare pair before when my original line went dodgy, now there are no spares left, so the engineer has somehow used one wire from another persons house and 1 from another (Not sure how that works)

If that has been done, then it is a case of "split-legs" and is absolutely detrimental to a broadband service. The only thing the engineer might have done is to have found two separate telephony service only pairs and then swapped the three connections around so that you have a twisted pair and the other telephony only users' pairs are on "split-legs". I would be very surprised if an OR engineer has actually done that . . . perhaps only as a stop-gap measure before the area is re-cabled?

As has already been suggested, contact your ISP and ask them for the full engineering report.

What do the error stats look like?

Pretty sure he did say something about split-legs, so should I complain to BT

This is the error log on my router. Hopefully its readable.
Since Reset Current 24-Hour Interval Current 15-Minute Interval Time Since Last Event
ATM Cell Header Errors: 181 1 0 0:59:40
ATM Loss of Cell Delineation: 123 0 0 19:35:23
DSL Link Retrains: 1 0 0 19:35:23
DSL Training Errors: 0 0 0 0:00:00
DSL Training Timeouts: 0 0 0 0:00:00
DSL Loss of Framing Failures: 2 0 0 19:35:23
DSL Loss of Signal Failures: 2 0 0 19:35:23
DSL Loss of Power Failures: 0 0 0 0:00:00
DSL Loss of Margin Failures: 2 0 0 19:35:23
DSL Cumulative Errored Seconds: 48 1 0 0:59:40
DSL Severely Errored Seconds: 2 0 0 19:35:23
DSL Corrected Blocks: 5916 68 1 0:00:55
DSL Uncorrected Blocks: 186 1 0 0:59:40
ISP Connection Establishment: 2 2 2 15:30:39

Is it affecting your phone service? If it isn't then it's an ADSL problem and you need to complain to your ISP.

How long had the modem been up when you got those stats?

so should I complain to BT

Only if your ISP is BT Retail.

Those stats were for the last day and a half.
My ISP is Aquiss.

I reckon the reply from BTW and/or OR would be "tough". It exceeds 28.8kbps dialup.

(Edit - typo).

Edited by RobertoS (Thu 30-Jun-11 15:20:30)

It sounds unlikely that a simple solution will be found regardless of who the OP approaches.

@OP: were the wires originally switched at your request?