The obvious improvement that needed addressing on this issue was the mystery substance on the back cover. Was it mud, chocolate? Who knows? You never know how long something like this had been stuck to the cover, now can it be removed without leaving any damage.
Luckily for this issue, the offending matter was able to removed totally. It has left some slight staining to the paper fibres, but still on the whole I was pleased and feel it presents a lot nicer now than it did before.