I've been getting a lot of books in the mail lately with cleaved spines and loose pages and wanted to add an RC to my account so this doesn't keep happening. I don't care if the spines are worn, I don't care how many creases it has, I just don't like the glue of the spine split in half. Any ideas on how to word it so that it sounds nice (I hate when an RC sounds rude) and is clear what I am requesting?  II've noticed some people don't know what a cleaved or seperated spine means, I've seen the question posted a few times before.

I'm not sure how to help you word it but have you been marking those RWP and asking for your credit back?

I'm sorry to have to list conditions, but I've received a number of books that don't meet PBS posting guidelines.

Please, no books with spines that are cracked, with or without pages loose or missing. 

A crease in the spine is ok - but if you can see the glue between the pages of a crack, or the book falls open to a certain page and the spine is showing, the book is probably not postable.

Thanks for your time and consideration!"

No, I did not mark them RWP but I truely regret not doing it now. Not because I wish I had my credit back, but because I've read a very good point some of you here have made - that not making the complaint is allowing the sender to think books in that condition are okay to swap using PBS. That's not a good thing to encourage.