Yeah, those uncorrecteds could even be something wrong with the modem. It might be a long shot, but I'd call Arris about it and see what they do. Worse case will be nothing; best case they might send you a replacement that works correctly so you do have a good backup.I'm back on the 8600, but while I had the 6141 installed I did try a refresh to the 6141 and noticed there were, immediately, a bunch of uncorrected errors on all channels, the highest amount was 1599. The SNR on the downstream was in good standing, too (37-38).
Anyways the 6141 has been retired and replaced and my experience with it has been eye opening for sure. I do wish I had a decent backup modem but it is what it is.