connect 3 gameobjects

I have two firemen carrying a ladder, when the ladder comes into contact with a prefab it shrinks or widens. The problem is when it gets smaller, the two firefighters on either side hold it in their position (don't move) and create a gap between the ladder and their hands. I've tried everything, but I don't know how to fix this. When the ladder widens the problem is not there because the colliders of the ladder automatically move the firefighters.

prefab code

 Rigidbody2D rb;

 float speed;
 float altezza;
 public float asseX;
 // Start is called before the first frame update
 void Start()
 {
     rb = GetComponent<Rigidbody2D>();
     speed = Random.Range(1f, 4f);
     altezza = Random.Range(0.5f, 2.9f);
     rb.velocity = new Vector2(speed, altezza);       
 }

 // Update is called once per frame
 void Update()
 {
     
 }

 private void OnCollisionEnter2D(Collision2D coll)
 {
     if (coll.gameObject.tag == "barella")
     {
         Barella.instance.transform.localScale += new Vector3(asseX, 0, 0); // LADDER
         // Pompieri.instance.transform.position += new Vector3(asseX, 0, 0); // FIREMAN -- doesn't work

         Destroy(gameObject);
     }

     if (coll.gameObject.tag == "terra")
     {           
         Destroy(gameObject);
     }
 }