Can't move Camera Position using Script

Hello,

I'm making a simple Brick Breaker game and I'm trying to add a Camera Shake when a brick is destroyed. Here's my setup,

I have a Brick script that manages collision between my ball and my bricks, here's the piece that manages collision,

 void OnCollisionEnter2D (Collision2D collision) 
     {    
                 
         int health = (damageSprites.Length + 1);
         // ADD if brick hits need debugging
         //Debug.Log("Brick Hit");
         damage++;
         
         if (isBreakable)
         {
             if (damage >= health)
             {
                 mainCam.GetComponent<CameraShake>().Shake();
                 AudioSource.PlayClipAtPoint(crack, transform.position);
                 smoke.GetComponent<ParticleSystem>().startColor = brickColor;
                 Instantiate(smoke, this.transform.position, Quaternion.identity);
                 GameObject.Destroy(gameObject);
                 brickCount--;
                 //ADD if need to debug bricks being destroyed
                 //Debug.Log("Brick Destroyed! Brick Count now, " + brickCount);
                 levelManager.BrickDestroyed();
             }
             else
             {
                 LoadSprite();
             }
         }
     }

I'm loading my mainCam variable in my start method,

         mainCam = GameObject.FindObjectOfType<Camera>();

I then have this CameraShake script attached to my MainCamera object in my scene,

 using UnityEngine;
 using System.Collections;
 
 public class CameraShake : MonoBehaviour {
     
     public float shakeDuration;
     public float shakeMagnitude;
     
     // Use this for initialization
     void Start () {
     
     }
     
     // Update is called once per frame
     void Update () {
     
     }
     
     public void Shake()
     {    
         print ("shake");
         
         float elapsed = 0.0f;
         
         Vector3 originalCamPos = transform.position;
         
         while (elapsed < shakeDuration) 
         {
             print ("shake in while");
             elapsed += Time.deltaTime;          
             
             //            float percentComplete = elapsed / shakeDuration;         
             //            float damper = 1.0f - Mathf.Clamp(4.0f * percentComplete - 3.0f, 0.0f, 1.0f);
             
             // map value to [-1, 1]
             float x = Random.Range(-1.0f,1.0f);
             
             float y = Random.Range(-1.0f,1.0f);
             
             x *= shakeMagnitude; //* damper;
             y *= shakeMagnitude; //* damper;
             
             Vector3 newCamPos = new Vector3(x,y, originalCamPos.z);
             
             transform.position = newCamPos;
             
         }
         
         this.transform.position = originalCamPos;
     }
 }

Unfortunately I have been unsuccessful in producing a shake with this setup. I have logged events for the following and confirmed that all are logging that they are functioning correctly,

• Finding the camera object

• Entering the shake script

• The original camera position

• Entering the while loop

• The elapsed time (which correctly logged gradually from 0 to the shakeDuration)

• The new Random floats (different for each different elapsed time)

• The newCamPos (also different for each different elapsed time)

• The transform.position also updated correctly

• The reset to the original position after the while loop completed

All of this and no camera movement. I suspected it was a global project setting preventing the camera from moving, but couldn't find anything.

Any help is greatly appreciated.