Hi Michael I totally understand is difficult area of work but I think with tools like that MoI could really bypass the limitations modelers have in some Nurbs environments...
Also if you don't mind me asking when you say (I'd like to add some of those kinds of deformation tools) do you mean the Bend, Twist or the Lattice Rig. Just to get an idea of what it may be possible...
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While I was experimenting I stumble upon a bug, I think.