transform.position innacurate? [Unity 2D]

[static_cast]

Code!

#pragma strict
#pragma downcast
var arrow : Transform;
var pos = new Array();
var rotation = new Array();

function Start()
 {
 pos = [-0.9, -0.3, 0.3, 0.9];
 rotation = [1, 180, 0, -1];
 var direction;

 for(var i = 0; i <= 16; i++)
  {
  direction = Random.Range(0, 4);
  var clone = Instantiate(arrow, Vector3(pos[direction], -2.4, 0), transform.rotation);
  clone.transform.rotation.z = rotation[direction];
  yield WaitForSeconds(1);
  }
 }

So basically, whenever I run this code, when I do Instantiate(), my arrow instantiates, but it is usually off a little bit. The thing is, it only does this when I try to change it to -0.3 and 0.3, and it can offset between -0.3 and -0.4. Hm???

[meat5000]

There is already a 2D Physics Collision Matrix.

Edit → Project Settings → Physics 2D