Uncorrectable errors and Critical messages in log

Had this issue about 6 months ago, cleared up but is back again. We lose layer3 during the day and have to power cycle the modem (Surfboard S34), I say layer3 because the connection indicator light on the modem shows connected but there's no IP traffic coming from upstream. Looking at the status I see a large amount of uncorrectable errors (over 10k in a 4 hour period) and critical level messages of "No Ranging Response received - T3 time-out" along with "SYNC Timing Synchronization failure - Loss of Sync". SNR ranges between 36db - 41db, power -1.2mV - 4.4mV (have seen it higher, up above 6mV)

Mostly this happens during the daytime, seems to be fine at night. Contemplating getting a Netgear modem but see some posts here where the results have been the same for people. Called support and supposedly the problem is getting sent to another group but I'm not holding my breath.

Looking like it's a line issue and hoping to find a path to have Xfinity to take a look at it.