Hi gster,

that's what I'd done too - just re-imported the base mesh.

I *think* I've found what the problem was; I was exporting from maya with the default settings. This morning I tried to quickly export with normals and smoothing unchecked; then imported it back from z. Only had a quick look but it seemed to have retained it's shape.

Looks like maybe with normals or smoothing (not sure which one yet) checked on export will cause this issue.

cheers,

gubar