Spawning and object based on rotation of player

OK first off a little more than just rotation.
I'm using a raycast from my players head at a 45 degrees angle down and using the hitinfo returned to decide if the object can spawn based on what is there and also what angle to spawn at.

Now most is working bar the raycast at 45 degrees as the player rotates the 45 degrees changes., Maths not being my strong point Im more than confused by what is going on. Any help greatly appreciated.

Here is a video showing the problem:

And here be the code:

Code (CSharp):

1.     private void MoveCurrentObjectToPlayer()
2.     {
3.         playerPos = player.transform.position + Vector3.up * 1.8f;
4.         playerDir = player.transform.forward;
5.         playerDir = Quaternion.Euler(-45, 0, 0) * playerDir;
6.         Debug.DrawRay(playerPos, playerDir, Color.yellow);
7.      
8.         Ray ray = new Ray(playerPos, playerDir);
9.         RaycastHit hitInfo;
10.         if (Physics.Raycast(ray, out hitInfo))
11.         {
12.             currentPlaceableObject.transform.position = hitInfo.point;
13.             currentPlaceableObject.transform.rotation = Quaternion.FromToRotation(Vector3.up, hitInfo.normal);
14.         }
15.     }

 

you just need to set "else" situation to Physics.Raycast

 

I cant see how the else would fix it? Its not a spawn problem as such but the direction of the raycast isn't staying at 45 degrees downwards.