https://forums.autodesk.com/t5/inventor-forum/flexible-nightmare/m-p/5522145#M385462 <P>It could be that you have constrained the rod in the housing using the axis constraint. This will allow two solutions that will match the constraint. The rod in one direction as well as in the other direction. An angle/direction constrain will stop this from happening as posted in the previous posts.</P> <P>&nbsp;</P> <P>This is a problem with Flexibility as Inventor&nbsp;attempts to loosen some constraint values&nbsp;to allow for motion.</P> Thu, 26 Feb 2015 22:48:28 GMT blair 2015-02-26T22:48:28Z