I have to report that i didnt have luck niether with new donor. I repeat that patient was HTS545050A7E380 P/N: H2T500854S7 MLC: DA6022 Made in China Nov2014 and new donor was HTS545050A7E380 P/N: H2T500854S7 MLC: DA4837 Made in China 25April2013.
After head swap drive spins up and start clicking and making noise "khhhrrrrrr"
So I thought that donor HSA is gone now. But I return it to donor and drive starts normaly and work properly so at least I was happy that i didn't loose another donor.
So, my conclusion is that Hitachi is not tolerant as you said Jared in earlier post.
Or my luck of enough knowledge is about? Comment please?!
I have to contact client to see if she is will wait for about month to order from donordrives.com new donor with totaly same MLC and closer date of manufacturing.