HELP! Why does my Drag and Drop not work Completely?

Hello! I'm working on an ActionScript 3 movie clip in Adobe Flash. In the interactive movie I want the user to create a snowman with the parts on the left side. (Picture below.)

On the right side I have the snowman slightly visible, so the user knows where to put the parts. Most of it seems to work... but after I put on the body, hat, and arms the other pieces don't work; like the eyes, nose, mouth, etc. Why does it not work? Can someone help me?

This is how it should look at the end, when the user complets it.

I think I coded this correctly. But I'm not sure. Please take a look at my code and see what the problem is. Thanks!!!

var startX:Number;

var startY:Number;

var counter:Number = 0;

SNOWMAN1_mc.addEventListener(MouseEvent.MOUSE_DOWN, pickUp);

SNOWMAN1_mc.addEventListener(MouseEvent.MOUSE_UP, dropIt);

SNOWMAN2_mc.addEventListener(MouseEvent.MOUSE_DOWN, pickUp);

SNOWMAN2_mc.addEventListener(MouseEvent.MOUSE_UP, dropIt);

SNOWMAN3_mc.addEventListener(MouseEvent.MOUSE_DOWN, pickUp);

SNOWMAN3_mc.addEventListener(MouseEvent.MOUSE_UP, dropIt);

LEFTARM_mc.addEventListener(MouseEvent.MOUSE_DOWN, pickUp);

LEFTARM_mc.addEventListener(MouseEvent.MOUSE_UP, dropIt);

HAT_mc.addEventListener(MouseEvent.MOUSE_DOWN, pickUp);

HAT_mc.addEventListener(MouseEvent.MOUSE_UP, dropIt);

RIGHTARM_mc.addEventListener(MouseEvent.MOUSE_DOWN, pickUp);

RIGHTARM_mc.addEventListener(MouseEvent.MOUSE_UP, dropIt);

SCARF_mc.addEventListener(MouseEvent.MOUSE_DOWN, pickUp);

SCARF_mc.addEventListener(MouseEvent.MOUSE_UP, dropIt);

EYES_mc.addEventListener(MouseEvent.MOUSE_DOWN, pickUp);

EYES_mc.addEventListener(MouseEvent.MOUSE_UP, dropIt);

MOUTH_mc.addEventListener(MouseEvent.MOUSE_DOWN, pickUp);

MOUTH_mc.addEventListener(MouseEvent.MOUSE_UP, dropIt);

CARROT_mc.addEventListener(MouseEvent.MOUSE_DOWN, pickUp);

CARROT_mc.addEventListener(MouseEvent.MOUSE_UP, dropIt);

COLE1_mc.addEventListener(MouseEvent.MOUSE_DOWN, pickUp);

COLE1_mc.addEventListener(MouseEvent.MOUSE_UP, dropIt);

COLE2_mc.addEventListener(MouseEvent.MOUSE_DOWN, pickUp);

COLE2_mc.addEventListener(MouseEvent.MOUSE_UP, dropIt);

COLE3_mc.addEventListener(MouseEvent.MOUSE_DOWN, pickUp);

COLE3_mc.addEventListener(MouseEvent.MOUSE_UP, dropIt);

function pickUp(event:MouseEvent):void {

event.target.startDrag(true);

MYTEXTBOX.text = "";

event.target.parent.addChild(event.target);

startX = event.target.x;

startY = event.target.y;

}

function dropIt(event:MouseEvent):void {

event.target.stopDrag();

var myTargetName:String = "T" + event.target.name;

var myTarget:DisplayObject = getChildByName(myTargetName);

if (event.target.dropTarget != null && event.target.dropTarget.parent == myTarget){

MYTEXTBOX.text = "Good Job!";

event.target.removeEventListener(MouseEvent.MOUSE_DOWN, pickUp);

event.target.removeEventListener(MouseEvent.MOUSE_UP, dropIt);

event.target.buttonMode = false;

event.target.x = myTarget.x;

event.target.y = myTarget.y;

counter++;

} else {

MYTEXTBOX.text = "Try Again!";

event.target.x = startX;

event.target.y = startY;

}

if(counter == 13){

        MYTEXTBOX.text = "Congrats, you're finished!";

    }

}

SNOWMAN1_mc.buttonMode = true;

SNOWMAN2_mc.buttonMode = true;

SNOWMAN3_mc.buttonMode = true;

LEFTARM_mc.buttonMode = true;

HAT_mc.buttonMode = true;

RIGHTARM_mc.buttonMode = true;

SCARF_mc.buttonMode = true;

EYES_mc.buttonMode = true;

MOUTH_mc.buttonMode = true;

CARROT_mc.buttonMode = true;

COLE1_mc.buttonMode = true;

COLE2_mc.buttonMode = true;

COLE3_mc.buttonMode = true;