Just FYI, you really can't trust the WD preamp vendor and revision numbers to be accurate. At least not in older families such as Mammoth. I've got a case here where I tried two different drives which should have been a match according to PC-3000 however, both sets click when in the patient drive. I've retested both sets back in their original donors, and they are still fine so I know I didn't kill them. Original heads don't click in patient drive but are extremely weak, so I know it's not an SA issue causing it to click.
I think the PA vendor/rev is specific to the country. In this case, the donor drives were both from Thailand and the patient is from Malaysia. Off to donor drives to track one down.
I think the PA vendor/rev is specific to the country. In this case, the donor drives were both from Thailand and the patient is from Malaysia. Off to donor drives to track one down.