Section of a video clip at beginning of my project I cannot delete

I want to delete a small section of the first clip in my Rush project, but it seems since it's at the beginning or because it is so small the section won't delete. The audio that went with the small section deleted fine.  It's the video part that won't delete.  Ive tried a lot of different ways to delete it.  So I duplicated my project and deleted all of the other clips and suddenly the part I wanted to delete was all that was left and it showed all the times that I tried to cut it.  But when I add back in my clips it reappears. So it's attached to the first clip but hidden.  How do I get rid of it?  I've tried expanding the clips to view more but that doesn't show the small section. It's still hidden.