DIY Hobie Adjustable Rudder castings, trying to find thread

I have a extra set of (H16) rudder castings and I would like to make them adjustable, or at least try to, I remember seeing a DIY thread but I can't seem to find it again, does anyone know where it is or have any advice or data?

Thanks

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Cesar (Cez) S.
Hobie 16 (had a few)
Nacra 5.2 "Hull Yeah"
Vectorworks XJ - A class (not named yet)
West Michigan (Grand Rapids/Holland Area)
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