Well... after 5 months since posting this.
I checked my superhub tonight, and downstream levels have dropped by about 2dB, upstream levels have increased by about 5dB all on their own suddenly.. so VM networks team have done something.
AND.... NO MORE T3 ERRORS!!
But why has it taken them 5 months to fix this? especially after during this time I had made several complaints regarding it... it started when they added more downstream channels and I was getting quite a few every day.
Next month im due to be in a 120mbit ready area as they say upgrades are almost complete... so my guess is they have done something to do with the upgrades which has caused the alteration of my signal levels and fixed the T3s.
just stupid that its taken 5 months.
also noticed that the missing downstream channel in the sequence.. 36 if i can remember has appeared now.
Previously it had always been missing with a gap in the channel numbers.