SMART is unfortunately an extremely proprietary standard with different manufacturers having different SMART standards and thresholds. In my experience as an ITS tech, Seagate has in the past been pretty demanding with its SMART values. That being said, looking at your description, it appears that your drive is failing, most likely due to heat stress or dirty power. You should get a Seagate RMA if your warranty is still active. If this is not an option then you should investigate purchasing GRC Spinrite and doing a Level 5 scan for defect repair. After Spinrite repairs your drive, you can consider using Seagate's Disc Wizard to zero-fill the drive and remove the bad sectors. On an aside I have had some bad experiences with HDD Regenerator and I cannot recommend using it, as its supposed unique magnetic algorithm is very suspect and tends to heat the target drive to dangerous temperatures.