Duplicate image instances on canvas

I made a series of 4 images that have a 2D position that follows a 3D position (by FollowWorldPosition.cs script) in the world. They behave as expected, except for the fact that there are duplicates in different positions.

I expect that i need to use a different transform method or am creating instances unknowingly. Please help me get rid of the duplicates.

This is the script on the images:

using UnityEngine; using System.Collections;

public class PositionHotspotIcon : MonoBehaviour {

 public float hotspotId;

 // Use this for initialization
 void Start () {

 }
 
 // Update is called once per frame
 void Update () {
     var cameraRef = GameObject.Find("Main Camera");
     var componentRef = cameraRef.GetComponent<WorldToScreenPoint>();

     float xRef = 0;
     float yRef = 0;

     if(hotspotId == 1)
     {
         xRef = componentRef.xRef;
         yRef = componentRef.yRef;
         print("hotspot ID = 1");
     }
     else if (hotspotId == 2)
     {
         xRef = componentRef.xRef2;
         yRef = componentRef.yRef2;
         print("hotspot ID = 2");
     }
     else if(hotspotId == 3)
     {
         xRef = componentRef.xRef3;
         yRef = componentRef.yRef3;
         print("hotspot ID = 3");
     }
     else if(hotspotId == 4)
     {
         xRef = componentRef.xRef4;
         yRef = componentRef.yRef4;
         print("hotspot ID = 4");
     }
     else
     {
         xRef = 0;
         yRef = 0;
         print("hotspot ID = N/A");
     }

     //transform.position = new Vector2(xRef,yRef);

     RectTransform rTrans = (RectTransform)transform.GetComponent<RectTransform>();
 }

}