The capping method worked as Archetytype486 suggested RTX is now low after 2 days with cap in place, INP: has been stuck at 52.00 and also interleaving Depth of 4 for 5 months.
INP: now at 45.00 and interleaved depth 16.
Before capping the sync to 26000 Kbps the FECS per day were 3-4 million, Errored seconds 4 - 7 SNRM 4.8dB, after capping the SNRM rose to 12dB FECS went down to 5000 per day and just 1 errored second in 2 days.
adsl info --stats
adsl: ADSL driver and PHY status
Status: Showtime
Last Retrain Reason: 0
Last initialization procedure status: 0
Max: Upstream rate = 6469 Kbps, Downstream rate = 44903 Kbps
Bearer: 0, Upstream rate = 6469 Kbps, Downstream rate = 40000 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
Down Up
SNR (dB): 4.7 6.0
Attn(dB): 25.0 0.0
Pwr(dBm): 11.2 0.3
VDSL2 framing
Bearer 0
MSGc: -6 26
B: 138 191
M: 1 1
T: 0 41
R: 8 10
S: 0.1101 0.9423
L: 10684 1715
D: 16 1
I: 147 101
N: 147 202
Q: 16 0
V: 12 0
RxQueue: 27 0
TxQueue: 9 0
G.INP Framing: 18 0
G.INP lookback: 9 0
RRC bits: 0 24
Bearer 1
MSGc: 90 -6
B: 0 0
M: 2 0
T: 2 0
R: 16 0
S: 10.6667 0.0000
L: 24 0
D: 1 0
I: 32 0
N: 32 0
Q: 0 0
V: 0 0
RxQueue: 0 0
TxQueue: 0 0
G.INP Framing: 0 0
G.INP lookback: 0 0
RRC bits: 0 0
Counters
Bearer 0
OHF: 0 729254
OHFErr: 2 0
RS: 862036672 2327746
RSCorr: 115685 5
RSUnCorr: 0 0
Bearer 1
OHF: 1482645 0
OHFErr: 0 0
RS: 8895502 0
RSCorr: 16 0
RSUnCorr: 0 0
Retransmit Counters
rtx_tx: 28220423 0
rtx_c: 937 0
rtx_uc: 5 0
G.INP Counters
LEFTRS: 25 0
minEFTR: 39989 0
errFreeBits: 14526711 0
Bearer 0
HEC: 0 0
OCD: 0 0
LCD: 0 0
Total Cells: 1831866277 0
Data Cells: 12971644 0
Drop Cells: 0
Bit Errors: 0 0
Bearer 1
HEC: 0 0
OCD: 0 0
LCD: 0 0
Total Cells: 0 0
Data Cells: 0 0
Drop Cells: 0
Bit Errors: 0 0
ES: 2 0
SES: 0 0
UAS: 19 19
AS: 23819
Bearer 0
INP: 45.00 0.00
INPRein: 0.00 0.00
delay: 0 0
PER: 0.00 9.69
OR: 0.01 26.40
AgR: 40252.99 6495.02
Bearer 1
INP: 2.50 0.00
INPRein: 2.50 0.00
delay: 0 0
PER: 16.06 0.01
OR: 47.81 0.01
AgR: 47.81 0.01
Bitswap: 6760/6760 5/5
Total time = 6 hours 37 min 18 sec
FEC: 115685 5
CRC: 2 0
ES: 2 0
SES: 0 0
UAS: 19 19
LOS: 0 0
LOF: 0 0
LOM: 0 0
Latest 15 minutes time = 7 min 18 sec
FEC: 5092 0
CRC: 0 0
ES: 0 0
SES: 0 0
UAS: 0 0
LOS: 0 0
LOF: 0 0
LOM: 0 0
Previous 15 minutes time = 15 min 0 sec
FEC: 6086 0
CRC: 0 0
ES: 0 0
SES: 0 0
UAS: 0 0
LOS: 0 0
LOF: 0 0
LOM: 0 0
Latest 1 day time = 6 hours 37 min 18 sec
FEC: 115685 5
CRC: 2 0
ES: 2 0
SES: 0 0
UAS: 19 19
LOS: 0 0
LOF: 0 0
LOM: 0 0
Previous 1 day time = 0 sec
FEC: 0 0
CRC: 0 0
ES: 0 0
SES: 0 0
UAS: 0 0
LOS: 0 0
LOF: 0 0
LOM: 0 0
Since Link time = 6 hours 36 min 59 sec
FEC: 115685 5
CRC: 2 0
ES: 2 0
SES: 0 0
UAS: 0 0
LOS: 0 0
LOF: 0 0
LOM: 0 0
>
Thanks Kitizens