Have been using your script for a day or so now, and it made me think of that I only chop 32 places, meaning my rate of return to same spot within a given period is high, and thereby risk for being reported high too. I therefor took a look at the script, and I wonder if it's impossible to make the script use more than 2 books.
In your "setup_runebooks" sub, you set up one book for "ter" and one for "mur", so my thought was to make it set it up for "te" "rm" and "ur" that would give 3 books. If my thoughts is correct I guess you could make unlimited amount of books, as long the property of each book is different, and there is no oher books with same property.
Furthermore I found a little bug. I am not sure how it happens, or why, but I have 2 extra crystal shards on the counter, compared to what I have in my secure. It's not something that makes a difference really, it's only a cosmetic issue.