[DiapDealer]

I'm not sure IDs are your problem here. All three IDs are different (I would get rid of the "opf:scheme='uuid" though, since that's not what you're using. I believe I suggested that in the other thread). Each also has a second calibre ID (but again, all three are different--and books can have multiple IDs), I assume you've used calibre's editor on the books at some point? If so, why not just use calibre's built-in feature to generate new IDs?

But more likely: check all the dc metadata in the OPF file (not calibre's metadata for the book; the OPF file) and make sure devices aren't thinking the books are the same because the title and the author are the same there.

EDIT: well I was told the calibre editor could generate a new ID, but perhaps I was misinformed. I can't seem to find the feature if it does exist. Sorry.