WD10SPCX: WDIDLE3 or other tools won't see it

SUCCESS!

I tried the eSATA interface of the Verbatim controller (a.k.a. a Verbatim external HDD I ripped apart), and now WDIDLE3 DID see the drive. The idle time was originally even set to 4 seconds! Why would WD do that? I set it to 120 seconds, and so far everything seems fine. Excellent!

Cheers