hit.parent doesn't work when applied to physics GameObjects using Constant force

Hello guys! I am having a problem with some code.

I have a build script which attaches cubes (ship components) to other cubes (ship components) and to this day it is working PERFECTLY!

Only issue I am having now is that when i attach a constant force to this object, and try to child one of the other cubes to it, the cube refuses to child itself to that parent cube.

• Before i added constant force to the parent cube, it worked fine and each cube child'd itself just fine. They would all move with the parent and so on.

Is there anything i am missing here or something i have forgotten to do?

Script:

 var blockLayer : LayerMask = 1;
 var range : float = 100;
 var hit : RaycastHit;
 
 var blocks : GameObject[];
 var chosenB : GameObject;
 
 static var shipStart : boolean;
 var shipBegin : GameObject;
 var shipParent : Transform;
 var shipSpawn : Transform;
 
 var player : Transform;
 var instantiatedObject;
 var isC = false;
 ////////////////////////////////////////////////////
 var snapDirections : Vector3[];
 var closestSnapDirection : Vector3;
 var forwardVar : Vector3;
 ////////////////////////////////////////////////////
 
 function Update () {    
     
     snapDirections[0] = Vector3.right;
     snapDirections[1] = Vector3.left;
     snapDirections[2] = Vector3.forward;
     snapDirections[3] = Vector3.back;
     //snapDirections[4] = Vector3.up;
     //snapDirections[5] = Vector3.down;
     
     if(Input.GetKeyDown(KeyCode.Alpha0))
     {
         chosenB = null;
     }
     if(Input.GetKeyDown(KeyCode.Alpha1))
     {
         chosenB = blocks[0];
     }
     if(Input.GetKeyDown(KeyCode.Alpha2))
     {
         chosenB = blocks[1];
     }
     if(Input.GetKeyDown(KeyCode.Alpha3))
     {
         chosenB = blocks[2];
     }
     if(Input.GetKeyDown(KeyCode.Alpha4))
     {
         chosenB = blocks[3];
     }
     if(Input.GetKeyDown(KeyCode.Alpha5))
     {
         chosenB = blocks[4];
     }
     if(Input.GetKeyDown(KeyCode.Alpha6))
     {
         chosenB = blocks[5];
     }
     if(Input.GetKeyDown(KeyCode.Alpha6))
     {
         chosenB = blocks[6];
     }
     if(Input.GetKeyDown(KeyCode.Alpha7))
     {
         chosenB = blocks[7];
     }
     if(Input.GetKeyDown(KeyCode.Alpha8))
     {
         chosenB = blocks[8];
     }
     
     if (Input.GetMouseButtonDown(0))
         Build();
     if (Input.GetMouseButtonDown(1))
         Erase();
     
     
     if(Input.GetKeyDown(KeyCode.B))
     {
         shipStart = !shipStart;
         isC = true;
     }
     
     if (Physics.Raycast(transform.position, transform.forward, hit, range, blockLayer)) 
     {
         chosenB.transform.position = hit.normal;
     }
     
 }
  
 function Build() {
 
     if (HitBlock() && hit.transform.tag == "Block" || HitBlock() && hit.transform.tag == "Helm" || HitBlock() && hit.transform.tag == "Weapons") 
     {
 
         
         var dotProductClosestToOne = Mathf.NegativeInfinity;
         var playerForward = player.transform.forward;
         for(i = 0; i < snapDirections.Length; i++) ///////////////////////////
         {
             var currDotProduct : float = Vector3.Dot(snapDirections[i], player.transform.forward);
             if(currDotProduct>dotProductClosestToOne)
             {
                 dotProductClosestToOne = currDotProduct;
                 closestSnapDirection = snapDirections[i];
             }
         }/////////////////////////////////////////////////////////////////////
         
         var interF = GameObject.Instantiate(chosenB);
         interF.transform.rotation = Quaternion.LookRotation(closestSnapDirection, Vector3.up);
         interF.transform.position = hit.transform.position + hit.normal;
         interF.transform.parent = hit.transform.parent;
     }
 }
  
 function Erase() {
 
     if (HitBlock() && hit.transform.tag == "Block" || HitBlock() && hit.transform.tag == "Helm" || HitBlock() && hit.transform.tag == "Weapons")
         Destroy(hit.transform.gameObject);
 }
  
 function HitBlock() : boolean {
     return Physics.Raycast(transform.position, transform.forward, hit, range, blockLayer);
 }
 
 
 function OnGUI()
 {
 
     
     if(shipStart == true)
     {
         
         if(GUI.Button(Rect(1,1,100,20), "Create Ship"))
         {
             var ship = Instantiate(shipBegin, shipSpawn.transform.position, Quaternion.identity);
             shipP = Instantiate(shipParent, shipSpawn.transform.position, Quaternion.identity);
             ship.transform.tag = "Block";
             ship.transform.parent = shipP.transform;
              
         }
     }
 }

Any hep would be greatly appreciated! Thank you once again for reading, Sincerely,

bakos