Update. Sandisk finally gave me an answer and offered to RMA the drives as a courtesy saying they
could find no idication of issues with the SSD’s from the data I sent them.
They suggested that my Apricorn external enclosure went bad from the time I used it last till I
tried to clone my C drive to one of the new SSD’s.
I use that external enclosure at least once a week every week and I have a second Apricorn enclosure
that i tried and got the same issues. It is highly unlikely that both Apricorn enclosures are bad especially
since I have cloned my C drive using both enclosures with a Samsung SSD on 8/15/15. Absolutley no errors.
I have since RMA’d the SSD’s back to the vendor I purchased them.
I have asked Sandisk to keep this issue open as I intend to replace a 5 year old USB 3.0 add-in card
with a different brand and probably better support of USB 3.0. I will report back to Sandisk and this
forum after I have replaced the USB 3.0 card.