Need Help With My GAME!

I'm trying to build a 'tower defence' type game, and the game works fine with one turret. But when I have duplicate turrets dotted around the map, the turrets freak out.

Watch My YouTube Video:http://www.youtube.com/watch?v=6xCRZZiu9pU

Basically, what happens is when you select a turret, you have the ability to upgrade the firing range, and change many variables. But when I duplicate the turret, the variables get all mixed up (I'm guessing because they are static, as I need to share them).

And of course, duplicating turrets is important as the user will eventually be able to drag on turrets from a GUI - thus duplicating a prefab (I would imagine).

How can I go about making each turret variables unique to them selves? I really need this folks! Below are my script if you want to get an idea how things are laid out:

ClickObject: (script that picks up the mouse click - attached to parent)

#pragma strict

var clicked : boolean = false;
var hit : RaycastHit;
static var ClickedOn : boolean = false;

function Update() {
    if(Input.GetMouseButtonDown(0) &&
       collider.Raycast(Camera.main.ScreenPointToRay(Input.mousePosition), hit, Mathf.Infinity)) {
        clicked = !clicked;
        if(tag == "Select") tag = "Unselect";
        else tag = "Select";
        //Debug.Log("clicked" + (clicked? "" : " off"));
    }
ClickedOn = clicked;
}

Control: (variables that controls the turrets state - attached to child)

static var Play = false;
static var Radius : int = 10;
static var ModerniseLevel : int = 1;
static var ModernisePlay : boolean = false;
static var DisplayCamera : boolean = true;
static var TurretClicked : boolean = true;
var TurretCam : Camera;

function Start () {
    TurretCam.enabled = true;       
}


function Update () {

    //TurretClicked = ClickObject.ClickedOn;
    collider.radius = Radius;
    //TurretClicked = ClickObject.ClickedOn;
    print(TurretClicked);

    if(ModerniseLevel == 2 && ModernisePlay == true){
        animation["SpawnMissile"].speed = 0.5;
        animation.wrapMode = WrapMode.Once;
        animation.Play("SpawnMissile");
        ModernisePlay = false;
    }
}

RadiusTexture: (positions sphere around turret according to radius - attached to same child)

var RadiusObject : Transform;
var RadiusSphere : Transform;
private var CurrentSize : float;

private var ScaleX = 3.1; //2
private var ScaleY = 0; //0
private var ScaleZ = 3.4; //2.3

private var ScaleXDiv : float = 0;
private var ScaleYDiv : float = 0;
private var ScaleZDiv : float = 0;

private var ScaleXNew : float = 0;
private var ScaleZNew : float = 0;

private var Clicked = false;
var MouseOverClicked = false;

var Texture = true;

function Update () 
{
    if(ClickObject.ClickedOn == true)
    {
        LeftMenu.TurnOn = true;
        if(Texture == true)
        {
            CurrentSize = collider.radius;

            ScaleXDiv = (ScaleX * CurrentSize);
            ScaleXNew = ScaleXDiv / 10;

            ScaleZDiv = (ScaleZ * CurrentSize);
            ScaleZNew = ScaleZDiv / 10;

            RadiusObject.transform.localScale = Vector3(ScaleXNew,ScaleY,ScaleZNew);
        }
        else
        {
            CurrentSize = collider.radius;
            RadiusSphere.transform.localScale = Vector3(CurrentSize * 3,CurrentSize * 3,CurrentSize * 3);

        }
        //Clicked = true;
    }
    else if(ClickObject.ClickedOn == false)
    {

        LeftMenu.TurnOn = false;
        RadiusObject.transform.localScale = Vector3(0,0,0);
        RadiusSphere.transform.localScale = Vector3(0,0,0);
        //Clicked = false;  
    }
}

LeftMenu: (GUI)

private var myLeft:float = 10;
private var myTop:float = 100;
private var myWidth:float = 150;
private var myHeight:float = 40;

var prefab : GameObject;
var gridX = 5;
var gridY = 5;
var spacing = 2.0;

var isDragging:boolean = false;
var hit : RaycastHit;

var Power = 10;
var Strength = 10;

var TurretCamera : Texture;
static var TurnOn = false;


function OnGUI()
{
    //Turret Camera Window
    if(TurnOn == true){
        GUI.DrawTexture(Rect(Screen.width - 300, Screen.height - 300,260,260), TurretCamera, ScaleMode.StretchToFill, false, 30.0f);
    }


    if (GUI.RepeatButton(Rect(myLeft, myTop, myWidth, myHeight), "Moving Button" ))
        isDragging = true;

    if (isDragging){
        myLeft = Input.mousePosition.x - myWidth*0.5;
        myTop = Screen.height - (Input.mousePosition.y + myHeight*0.5);
    }

    if(Controller.OrbitCamVar == false){
        if (GUI.Button(Rect(10,10,50,50),"3D")){
            Controller.OrbitCamVar = true;
        }
    }
    else if(Controller.OrbitCamVar == true){
        if (GUI.Button(Rect(10,10,50,50),"2D")){
            Controller.OrbitCamVar = false;
        }
    }

    if(TurnOn == true)
    {
        GUI.BeginGroup (new Rect (2, Screen.height - 300, 170, 300));
        GUI.Box(Rect(0,0,170, 300),"Turret Info");
        GUI.Label (Rect (10, 30, 200, 30), "Name: Machine Turret");
        GUI.Label (Rect (10, 80, 200, 30), "Radius: " +Control.Radius); //Max 40!
        if (GUI.Button (Rect (170 - 65, 80, 60, 20), "Upgrade")){
            if(Control.Radius < 40){
                Control.Radius += 3;
            }
            else
            print("Max Radius Reached!");
        }
        GUI.Label (Rect (10, 110, 200, 30), "Power: " +Power);
        if(GUI.Button (Rect (170 - 65, 110, 60, 20), "Upgrade")){
            Power += 5;
        }
        GUI.Label (Rect (10, 140, 200, 30), "Strength: " +Strength);
        if(GUI.Button (Rect (170 - 65, 140, 60, 20), "Upgrade")){
            Strength += 5;
        }

        if(GUI.Button (Rect (170/2 - 130/2, 250, 130, 30), "Modernise")){
            Control.ModerniseLevel += 1;
            Control.ModernisePlay = true;
        }

        GUI.EndGroup();

    }

}

If you do have an idea of how to help me, please give an example - my scripting it still not very strong. I would appreciate this to whom ever can help!

Ollie