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1. At the default pose, create a Rest node
2. Create an attribute node, in the RenderMan tab select "add to default mappings"
   1. Houdini name is: rest
   2. RiType is Pr__Pref
3. In your PxrManifold3d used for controlling pattern placement, under Pref type Pr__Pref

From here your renders should use the default position and shape set by the Rest node.