Crouch in FPS changes player scale not controller height

I have been using UNITY for almost 3 months now. I have a crouch script working that activates when I press LEFT SHIFT...Everything works fine, except everything parented to the player controller shrinks and warps as well via scale. When looking up and down, I have a camera (equipped) that is now suspended in front of the player and warped vertically..! :o So I know that it has to do with the scale command and that I should call directly the player controller HEIGHT variable instead but so far I haven't figured out the code for it...

Many times i would fall right through the floor when crouching but i did manage to fix that by modifying the controller radius.

Here is my current script for crouch and run. (I am going to try and learn as much JAVA as I can as well!I really enjoy learning this...custom everything!) I am basically trying to avoid distorting children items (or scale altogether)

//RUN.js

var walkSpeed: float = 7; // regular speed var crchSpeed: float = 3; // crouching speed var prnSpeed: float = 1; // crouching speed var runSpeed: float = 20; // run speed *high for saving testing time

private var chMotor: CharacterMotor; private var tr: Transform; private var dist: float; // distance to ground

function Start(){ chMotor = GetComponent(CharacterMotor); tr = transform; var ch:CharacterController = GetComponent(CharacterController); dist = ch.height/2; // calculate distance to ground }

function Update(){

 var vScale = 1.0;
 var speed = walkSpeed;
 
 if (Input.GetKey("left ctrl") || Input.GetKey("right ctrl")){
     speed = runSpeed;
 }
 if (Input.GetKey("left shift")){
     vScale = 0.55;
     speed = crchSpeed; // slow down when crouching
 }
 if (Input.GetKey("left alt")){
     vScale = 0.27;
     speed = prnSpeed; // slow down when prone
 }
 chMotor.movement.maxForwardSpeed = speed; // set max speed
 var ultScale = tr.localScale.y; // crouch/stand up smoothly 
 tr.localScale.y = Mathf.Lerp(tr.localScale.y, vScale, 5*Time.deltaTime);
 tr.position.y += dist * (tr.localScale.y-ultScale); // fix vertical position

}