I don't know if it is LIT, calibre, or just my own personal brand of bad luck but it seems to me (not a scientific study by any means) that converting LIT to epub causes bad things to happen to formatting and just generally makes me grumpy and more likely to delete the ebook in its entirety than try to sort out the formatting so that I can read it with any sense of ease.

That may be the longest sentence I have ever written.