I add another observation: When I tried to clone CF using DD for Windows (*), the process interrupt at 98% when reading, and another at 99%. This happened twice, in differents controllers (same model, T51H).
We strongly suspect a bad memory sector, in bothe controllers. Strange is, similar bad memory sector (98 and 99%).
(*):Recomended by Kawasaki's technician https://www.si-linux.co.jp/techinfo/index.php
Regards