making a rig chain longer

Unity Engine
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1

i have a rig setup with multiple rigs all connected to each other, and i use damped transform to get a swirly like effect. (see video), i need to make the rig longer at some point but my damped transform components do not allow me to move rigs myself. how can i make the rig longer at some point?

2

i forgot to mention, i need to make the rig longer while the effect (swirly effect) is happening, so i can not disable components or set the weight to 0;