Fixing my workout bench with 3D printing

I purchased this workout bench a while back and was surprised about the sketchy build and I didn't trust it. After some Fusion 360 CAD work and 3D printing, it now seems safer to me.
Disclaimer: I am not a mechanical engineer, nor do I have the necessary skills to evaluate the safety of these modifications. This video should not be used as a tutorial and should not be reproduced due to the risk of injury while modifying or using modified workout equipment. You are fully responsible for reproducing any of the actions shown.
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