I'm always looking to find some more knowledge, especially when it comes to engine theory, and performance. I was googling around and found a full printing of this book. 4 stroke performance tuning in theory & practice. http://www.scribd.com/doc/11433843/4...heory-Practice I have been reading this and everything my friend and I have done to my engine has been covered in this book. Good to know my friend knows what he's doing.
Enjoy the book.