this is a 3 year old drive. about 1.5 year ago i had mistakenly shutdown my pc while windows update then i got lots of bad sectors but zeroing the drive solved those(WD had said it was a software problem and zeroing will fix it and it did.) issues until today i see this. should i change the drive? there are no read/write problem i noticed on my end yet. The RAW values are in Decimal.