Steps taken:
Unplugged and reseated SATA and power connectors.
Rebooted server, errors still present on rebuild.
Powered down server, replaced SATA cable with extra one.
Rebooted server, errors still present on rebuild.
Replaced SATA cable with old one. Disconnected Disk2 sata cable from PCIE sata card, swapped it to SATA port on motherboard with another drive.
No errors for Disk2 on rebuild, 8 hour estimate for rebuild. No errors show on the drive that is newly connected to PCIE SATA card, will continue to monitor.