Preloader not viewable till 69%

[jmecobb]

I'm having a problem with my preloader. For some reason it wont show up until its 69% loaded. Here is the site: http://www.jameycobb.com

totalBytes = Math.round(getBytesTotal() / 1024);
loadedBytes = Math.round(getBytesLoaded() / 1024);
percentDone = Math.round((loadedBytes / totalBytes) *100);
myText.text=Math.round(getBytesLoaded()/getBytesTotal()*100)+"%";
mcPopcorn.mask._yscale = (getBytesLoaded()/getBytesTotal()*100);
if (this._framesloaded>= this._totalframes) {
gotoAndPlay("start");
}

everything works ok except for the fact it doesnt show the preloader progress until 69% ????