New router showing thousands of RX CRC Errors

[#1]

I have just replaced my TP-Link Load Balancer with a new DrayTek Vigor 2925n and after configuration the stats page is showing me lots of errors on my primary WAN interface.
I would appreciate your thoughts on this please, as it doesn't look right to me. I've never mentioned it before as I didn't know due to the lack of this information in my old TP-Link.

[#2]

What's the up-time for that interface?
If you check the CRC count after some time has it increased significantly?

[#3]

At the time it was taken it was about an hour, however when I installed the router I disconnected from Plusnet but never powered off the modems, so how historical the data is I don't know.
Since that image was taken I've had another 16 errors counted, so at that rate it looks like a lot of them are in fact historical.
Later today (read lunchtime) I'll disconnect both modems as power them off, and see what happens.

[#4]

OK, I reset the modems last night and after 14 hours of operation I now have the following.
There are errors on both lines but I don't know what constitutes too many, any thoughts?

[#5]

As I understand it (probably only very simplistically to be honest), each CRC error requires a retransmit of a chunk of data (maybe a frame?), this really only takes a small fraction of a second so around 12 CRC per hour appears pretty insignificant (average one retransmit every 5 minutes).
Look here: http://www.kitz.co.uk/adsl/DLM.htm scroll down to the table 'Standard DLM Algorithm for line categorisation', although not exactly the same thing it indicates MTBE (mean time between errors) of >250 (seconds) = 4.16minutes or 345 errors per day categorises a line as 'good' - just beware in case it creeps up beyond this level.

[#6]

Thanks for that w23, I will keep an eye on this as you suggest but from reading the link this is within the norm for the current uptime.