External SWF rate

Question

I am using loadMovieNum to place an external swf on the stage. it is unloaded via an on (release). another button loads the external swf again. when it is reloaded a second time the external swf seems to play faster. the external swf has the following script. both swfs are at 12 fps. any help would be appreciated.
import mx.transitions.Tween;
import mx.transitions.easing.Strong;
this.createEmptyMovieClip("container2_mc",this.getNextHighestDepth());
container2_mc._x = 216;
container2_mc._y = 72;
this.createEmptyMovieClip("container1_mc",this.getNextHighestDepth());
container1_mc._x = 216;
container1_mc._y = 72;
this.attachMovie("loader","loader_mc",this.getNextHighestDepth());
loader_mc._x = 342;
loader_mc._y = 243;
var myMCL:MovieClipLoader = new MovieClipLoader();
var myListener:Object = new Object();
myMCL.addListener(myListener);
myListener.onLoadProgress = function(target,bytesLoaded,bytesTotal) {
loader_mc._alpha = 100;
var pct = Math.round(bytesLoaded/bytesTotal*100)
loader_mc.bar_mc._xscale = pct;
myListener.onLoadComplete = function(target) {
loader_mc._alpha = 0;
fadeIn();
buttons_mc.attachMovie("prev","prev_mc",buttons_mc.getNextHighestDepth());
buttons_mc.attachMovie("next","next_mc",buttons_mc.getNextHighestDepth());
buttons_mc.next_mc._x = 684;
buttons_mc.next_mc._y = 243;
buttons_mc.prev_mc._x = 0;
buttons_mc.prev_mc._y = 243;
var numPics:Number = 7;
var picArray:Array = new Array();
var currentElement:Number = 0;
var currentContainer:MovieClip = container1_mc;
for (i=0;i < numPics;i++) {
var location:String = "images/main/main_0" + (i+1) + ".jpg";
picArray.push(location);
myMCL.loadClip(picArray[currentElement],container1_mc);
buttons_mc.next_mc.onRelease = function() {
nextPicture();
clearInterval(myInterval);
myInterval = setInterval(nextPicture,10000);
function nextPicture()
if (currentContainer == container1_mc) {
  currentContainer = container2_mc;
else
  currentContainer = container1_mc;
currentContainer._alpha = 0;
container1_mc.swapDepths(container2_mc);
if (currentElement < picArray.length-1){
currentElement++;
else
  currentElement = 0;
myMCL.loadClip(picArray[currentElement],currentContainer);
buttons_mc.prev_mc.onRelease = function() {
if (currentContainer == container1_mc) {
  currentContainer = container2_mc;
else
  currentContainer = container1_mc;
currentContainer._alpha = 0;
container1_mc.swapDepths(container2_mc);
if (currentElement > 0){
  currentElement--;
else
  currentElement = picArray.length-1;
myMCL.loadClip(picArray[currentElement],currentContainer);
clearInterval(myInterval);
myInterval = setInterval(nextPicture,10000);
function fadeIn() {
new Tween(currentContainer,"_alpha",Strong.easeOut,0,100,48,false);
//--------------setInterval--------//
myInterval = setInterval(nextPicture,10000);

Answer 1

Not sure if this is the best method but it seems to work:
In external SWF       _global.myInterval = setInterval(nextPicture,8000);
In main SWF when called to reload external SWF      clearInterval(_global.myInterval);
                                                                              loadMovieNum("main_interval.swf",1);
If there is a better method any direction would be appreciated and thanks much for the input.