Scratch

I've run into a situation a lot where I make one sprite, and then copy it several times to have many identical objects on the stage at the same time.  I've found the trick of Shift-Clicking on the stamp to make the copies themselves, but it is really frustrating getting scripts into all of them.  If I don't get the scripts exactly as I want them before I copy them, then I have to revisit each and every one to make my changes.  Some behaviors are not obviously bad until you see them in multiple sprites at once, so things become very, very tedious.  Is there any way to group select a group of sprites and then make script changes that affect all the sprites int he group?