Sure - here are several files for you to look at.
My husband took my whole ebook collection and reformatted the EPUB files with Calibre and they all have the text that overlaps.
Obviously he seriously messed up my files.
I have about 600 books that turned out like this. When I read them on my Android phone using Aldiko they are fine but viewing them on our Nook or via the Calibre ebook viewer shows the overlapping text.
for any help you can provide.