Getting world position from screen position using Raycast.

Hi, I am trying to get world point by mouse position using the Raycast and it's not always working.
It's sometimes just ignore some of the objects. I am using it to place GameObject on node but it's just past over some of the nodes. All nodes have the same collider non trigger.
Code:

Code (CSharp):

1.  
2. Ray r = Camera.main.ScreenPointToRay( Input.mousePosition);
3. if (Physics.Raycast(r, out hit) && hit.transform.tag == "Node")
4. {
5.      Transform objectHit = hit.transform;
6.       towerToPlace.transform.position = objectHit.position;
7. }
8. Debug.DrawRay(r.origin , r.direction * 100, Color.red, 100, true);

The debug draw shows the expected results.

 

Try putting Mathf.Infinity as a length, because if I'm right, by default it isn't infinite

 

Nope, still the same...

 

I am such an idiot. the gameObject had a sphere collider so the raycast hit him first and the radius was 10 deliberately. lol