I'm working on an HVAC demonstration of a brace that strengthens a length of duct work and assures a 90-degree bend feeding into a vent in the system but am having problems in the animation of the actual straightening of the duct. Whenever I use the Bend Deformer I can get basically what I'm looking for but the very end of the duct (that attaches to the vent) will always move with the deformation and I'd like that part to stay vertical and not be affected by the Bend Deformer. Actually I'd just like to show a 90-degree bend in the duct with a large kink in it restricting airflow that's straightened out by the addition of this brace. Sort of like AE's Puppet Pin where you can add a pin that doesn't allow movement at that particular point. Maybe there's a better way to achieve this result than using the Bend Deformer.