Yup, the over-black box is unchecked *before* I drag and drop, and it still doesn't want to attach itself to the clip. It insists on going either before or after it, and automatically becomes an over-black, even though I've unchecked it a million times. Maybe there is something I need to adjust in the preferences?
Ugh. I worked with Adobe Premiere for over five years (on some complex stuff) with no trouble, and this basic, simplistic little iMovie is really grating my cheese.