Roll Cage: https://drive.google.com/drive/folders/1Wqc4nqJ0a2aRrzAx_YFg_Y3PpfUQS3Rt?usp=sharing
Create a new Assembly in inches.
Place the "Bottom" first using "Place Grounded at Origin".
Place the "Middle" and use only 1 Rigid Joint to connect it to the "Bottom". Ensure that the middle part is properly aligned and does not move when you try to drag it.
Place the "Firewall" and use only 1 Rotational Joint to connect it to the "Bottom". Ensure that the firewall does rotate when you try to drag it.
Place the "Top" and constrain the green bar on the top part to the top-back bar on the "Middle" part using Mate.
Also use Mate the parallel planes of the bottom and middle parts.
Also mate the red bar of the top part to the top red bar of the firewall.
Upload a screenshot showing an assembly of at least the bottom, middle, top, and firewall.