Massive issues with trunk torsion spring install

The symptoms as I am experiencing them is that the slider does t want to stay on the cam, and the spring pops out of the POCKET as a result... or maybe the spring pops out of the pocket, and as a result the cam doesn’t stay in place.

I can weld, but the area to be welded requires me to stand on my head, and the car is already painted. Don’t want to risk messing that up.

I agree with @Lord Sparky, I don’t like the design at all.