I'm building an app where the user can customize bicycles on an iPad.. Currently I'm working on switching bicycle components based on a GUI touch.

I'm able to instantiate prefabs in the correct postion since I add them as a child to the bicycle gameObject, so if the user rotates the bicycle and adds a new gameObject it will update the position of where it needs to be instantiated.

The problem I have encountered is that the first time I instantiate a prefab, it is not added as a child, and has the Vector3(0,0,0). Instantiating the second time however the prefab is in the correct position, rotation and is added as a child to the bicycle gameObject... I'm really not sure what's going on here. Has anyone else encountered a similar problem? Possibly I'm overlooking something in my script?

var saddle : GUITexture;

var clone : Transform;  //new bicycle component to replace orig
var orig: Transform;   //original bicycle component used for copying position+rotation
var bike : Transform;   //parent transform

    function Update () {

    if (Input.touchCount>0)
       {
          for (var touch : Touch in Input.touches)
          {
         if(touch.phase == TouchPhase.Began && saddle.HitTest(touch.position))
             {       
            clone.transform.position = orig.transform.position;
            clone.transform.rotation = orig.transform.rotation;
            clone.parent = bike;

     clone = Instantiate(clone,transform.position,transform.rotation);
     print (clone.transform.position);
         Debug.Log("TouchSaddleBtn");  
             }
           }
         }
      }