I designed a motion system to move an object: first move down 1 inch, then move horizontally 0.5 inch and then move up 1 inch. I used a gear/pinion to go along a U-Shape rack sets to realize the movement. I want to show the U-shape movement continuously in Solidworks. However it seems that I can not create the 3 rack and pinion mates at the same time. Is there a way that I can set dynamic mates and show the U-shape movement continously with Solidworks?