Hi guys, I am new to motion studies, and I am struggling a little to get things working right. I have a pretty basic piston pushing a disc setup. When I setup a linear motor to push the piston, in Basic Motion, it tries to break all my constraints and stalls out. In Animation it seems to work fine. I am thinking it is probably an easy fix and something I am just doing wrong. I would like to upload the files, but I do not see an option for that. I will post a pic instead. Thanks!