Loaded Swf timeline problems and duplicating when adding to stage

So I have a couple swfs that are loaded in using Loader, my first problem is I want to stop the timeline until another function when I want it to start. so In the complete function I have

var swfMC:MovieClip = e.target.content as MovieClip ;
swfMC.stop();

but the swf still runs through.

Another problem I am having is whenever I add it to the stage it seems to make a duplicate of the swf, and when I remove this duplicate it remains til flash finally crashes. There isnt anything but simple tweens in my swf’s (and added trace statements), so they shouldnt be held into memory. that and they shouldn’t have been duplicated in the first place… right?