As we all seem to be having difficulties head swapping these, I though it'd be nice to have a thread to share our DM head swap experiences. Here's mine from today:Patient
As you can see, I matched model, site, PN, and first four of serial. The drive initially ID'd showed correct capacity and allowed sector access. Resources were backed up and imaging started. A few heads actually read relatively quickly, others were slow but steady with only a few bad sectors. After about 10 minutes, drive hit a bad sector, began clicking and failed to ID after power cycling it.
Now it just clicks and spins down. But at least I know the heads were compatible, and I didn't kill them in the swap.