DVR doesn’t warn you when low on space, recordings disappear

DVR gets near full but none of the usual visual warnings (exclamation point ! next to soon to be deleted items) pop up in the recordings list. It just deletes stuff without warning. Indicator gets stuck at various % free readings, usually 19%. 

Recording space indicator is incorrect by about 35 hours HD 

after destructive  disaster recovery starting from scratch the indicator starts at 100% free 363 HD hours. After about 9 hours of recordings it is all the way down to 88%free 319 hours. (Which is  35 more than what I actually recorded. 

At the same time The U-verse app indicates what should be the correct 97%, 354 hours free. 

Changed outlets on on both the DVR and the RG after the destructive recovery. Plugged both straight into wall. 

Pace 8010 DVR 

fiber internet100 U450 TV with arris BGW210-700 gateway