UI changing position on instantiation on iOS

Hello fellow unityers! I have a problem with the positions of instantiated UI objects that only occurs when the project is compiled - I am using the new and wonderful Unity 5. I have a menu with a panel, with some elements inside (images and text) that are all positioned where i'd like with correct anchors, I use the following script to copy this panel, each time moving it to the right;

     public GameObject firstPannel;
     public int pannels = 10;
 
     void Start () {
         firstPannel.GetComponent<PlanetBoxConstructor>().construct(0);
         for(int i = 1; i<pannels; i++){
             GameObject newPannel = Instantiate(firstPannel, firstPannel.transform.position, firstPannel.transform.rotation) as GameObject;
 
             newPannel.transform.parent = transform;
             RectTransform rt = newPannel.GetComponent<RectTransform>();
             rt.sizeDelta = new Vector3(0,0);
             Vector3 newPos = newPannel.transform.position;
             newPos.x = firstPannel.transform.position.x*(i+1);
             newPannel.transform.position = newPos;
             newPannel.GetComponent<PlanetBoxConstructor>().construct(i);
         }

This works a charm in unity, and with other resolutions and screen sizes tried, but once compiled and put onto my iPhone5s all elements inside the copied panels are put into strange places. But are not this way in the original panel. The result:

I have tried making a script that resets the sizeDelta of each rectTransform to 0, one that sets all the anchor position to that of the element on the original but with no luck, here are my anchor positions, this picture is during runtime after the elements have been instantiated:

If anyone knows what I could be doing wrong I would be much appreciated :)

Thank you!