
Sorry my mistake.. I didn't think about the version you're using. VS10 you can not cut clips in the overlay tracks. It was one of the features we requested when it was being tested. However they waited until VS11+ to include that. I know with VS10+ it is a real pain and mess trying to do multi-camera editing, and keep the audio in sync.
The alternative to cutting the clips in the overlay tracks, is of course just having those clips set to
Fit to Screen. Do this by right-clicking on the image in the Preview window, and from the menu choose fit to screen.
You would then probably choose to have this overlay clip fade-in/fade-out. Also if you are using the audio from the video in the Main video track, you will need to mute the audio for the video in the overlay tracks.
Doing this will allow you to still use the video from the overlay tracks in full screen, just as if you had cut it. Not cutting the overlay clips, means a better chance of keeping it synchronized.
Also try using the
Ripple Editing. This locks the other tracks, (video overlay, title, and both audio) to the Main track. So any changes you make to the Main video track, such as adding or removing clips, will cause the other tracks to shift, keeping them aligned with where you placed them.