Improved Headrest Hook

I downloaded the original print in place model. It printed good but my daughter kept breaking off the little pivot pieces for the links. (Totally my fault for not getting the print settings right for ABS) So I redesigned this with links you screw together for added strength. I also shortened the item hook to make it look a little better. I printed 4 of each link piece to make it the same length as the original. The holes in Link C are sized to cut the threads while assembling. You may need to ru