Electra

We are restoring a Lockheed 10A in New Zealand. We've had a problem feathering the HS22D30 props (similar to Beech 18 set-up) The prop shop may have installed the wrong DVA in the hub - PN 518856. Props will slowly feather, but not un-feather. It appears we require DVA PN 518853?. Any help greatly appreciated.