So far so good with the new power adaptor. Uptime is over 1hr now and no reboots. Download speed seems about 2mbps better than with the Huawei unit I was using before. But that could be down to resyncing at a higher level. I'll leave my line alone for at least 10 days now, I'm sure DLM isn't happy with the constant resyncs.
Thanks for the info burakkucat and Alex Atkin UK!
Status: Showtime
Last Retrain Reason: 8000
Last initialization procedure status: 0
Max: Upstream rate = 14835 Kbps, Downstream rate = 61523 Kbps
Bearer: 0, Upstream rate = 14835 Kbps, Downstream rate = 59712 Kbps
Bearer: 1, Upstream rate = 0 Kbps, Downstream rate = 0 Kbps
Link Power State: L0
Mode: VDSL2 Annex B
VDSL2 Profile: Profile 17a
TPS-TC: PTM Mode(0x0)
Trellis: U:ON /D:ON
Line Status: No Defect
Training Status: Showtime
Max downstream is jumping around a lot. 60,000 average with peaks of 61700 and then down to 59700 sometimes. On the Huawei it was solidly 58600 ish.