At 12:13 when I test out the MCH-Suspension_Spring_Front_Top.L the top part comes with it but not the bottom. It breaks between 17 and 18. I tried to make sure they are in the same spot by snapping but they are still not connected. I can see it when I hit L and only the top or the bottom are selected. I'm going to try to take a screenshot.
Have you solved this issue yet ggailgongster? It's probably that you missed a bone or two when parenting, double check your parenting. Post a screenshot, a viewport render should be ok, if you are still in need of help.
