All running well and I was getting between 8-20mbps down, sharp tooth like retainability and also my modem disconnected evey now and then, with the modem freezing sometimes. Spoke with NZ Distrubuter for thomson and found out that if you have the profile VDSL2-DLM-5 the modem can freeze, I later found out I had VDSL2-DLM-3 and had this swapped to VDSL2-DLM-8. Since doing so I now have constant speeds between 18-20mbps down and 8mbps up (sync rate is 34mbps down, 1mb up).
I am about 350m from the cabinet using google maps, provided the cable runs under the street else 600 odd meters if it runs around the street.
So if anyone happens to have issues with VDSL, get them to try the DLM-8 profile on your connection.