CAPTAIN JACK HAMMER

I'm curious on why you felt removal of the concrete was need, weighing out the consequences of further injury/adaptive growth... Not picking it apart but very curious.
 
Concrete created a more static fulcrum/ less dynamic therefore force increasing and further stressing the points of attachment in a more concentrated area. Think of forked lead and placing a solid mass in that fork. Nut cracker type effect. Rebar used in concrete sheared and pulled out. Observation s made during heavy loads all pointed to concrete removal.
Also wanted to replace the chain but it showed it acting as force dampener. Like ballast in boats and other engineer structures. Hopefully that answers things.
 

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