The messing around seems to have caused a short-term fault. Assuming there are no ongoing noise problems that 9.6dB noise margin should reduce to 6dB within 10-14 days of it being set, and with luck to 3dB 10-14 days after that. To get to over 8Mbps sync I would think the noise margin was 3dB.
Each drop will cause an automatic re-sync at a considerably higher speed.
Until the first one doesn't occur very few ISPs will want to take any action on something the system is designed to handle itself.
Keep us posted, so we can advise further if the first one occurs. Or doesn't!
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UnLim Fibre (FTTC). Sync ~ 56.6/14.1Mbps @ 600m. - BQM
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Edited by RobertoS (Sat 04-Oct-14 21:40:54)