Raddo,
The addition of Banana Plug females, really makes things convenient when using the
old ZW's & KW's, it also keeps the nuts from working loose on the wire connectors poles, by completely removing the need for them, in fact I am getting ready to install them on the 250 ZW I just purchased from Jim also. This old ZW is in perfect shape and will get used on part of my next DCS/Legacy Christmas layout. I just picked up another Z4K from one of the OGR members also, I do believe my power station is complete at this time.
I do believe you can still reference the post on how to install the female Banana Plug on the ZW & KW Transformer, use the OGR search, it should still come up.
PCRR/Dave