I am trying to conduct a nonlinear study on an assembly. It will run as a static study but I cannot get the study to finish as a nonlinear as I believe the pins are rotating. I have a force applied to the pins, with a no penetration contact between the pins and housing and a slider fixture on the end of the pins. the whole assembly also has a symmetry fixture. What is the best way to fix the pins so they are not allowed to rotate but can still translate with the housing. I have attached a picture of my setup. Thanks!