I have the unrated edition, and the fact that this wasn't for it didn't occur to me until after I was finished. I did experience some drift (and had to pause/unpause/pause them both and drag them into place a couple times), but nothing I couldn't fix after a few seconds editing. Still, I'll dig up a regular-edition (I think I saw a pile of them at the store the other day) and see if that's any better. Of course, I'm new to this whole process, so it may just be me.