[mb-users] Verify data integrity

[Grant]

> Firstly, the measured drive read offsets used by the whole AR+EAC system
> seem incorrect.  The offset for one drive was established using an
> ingenious, but flawed mechanism that gave in incorrect value.  As this
> drive offset was then used a refenence to determine all others, they all
> share the same error.  More recent tests using a different and arguably
> better method have given a different drive offset, whic is much more
> likely to be correct.

Chris, what is this better method?

- Grant