Changing picture durations in Movie Maker

Is there a way to change the duration of ALL the pictures in a project AFTER they've been put on the timeline?  I don't want to use the slow down effect because it makes it too slow and changing each picture individually takes a really long time.  It seems like there should be an easier way to change them all.  It's so long between projects, that I almost always forget to change the duration before I start. :/  Thank you for any help you can give!