Hi muth
"once the rod removed , stiffness of the Whole system will get disturbed and there is some increase in load"

---There could be some increase in load or decrease in load when spring settle down accordingly spring position become slightly up of down.

Check sustain load & displacement in caesar, it will be slightly different than theoretical installed load.

Spring load variation maximum allowable as usual 25%.
But spring at WNC may affect surrounding support & nozzle seriously.
Nozzle load need to maintain as per normal standard allowable.

Regards

Habib