Nice Heli
I find a lot of the time doing a search for a particular subject will undoubtly give you more info than anyone is willing to type. The search option at the top of the page will and should become your ultimate reference. I did one on blade balancing for you:
here are some of the results:
http://www.rcuniverse.com/showthread...lancing+blades
http://www.rcuniverse.com/showthread...lancing+blades

read through these posts and you will learn a lot. After that if you have any questions post it here.
It's great, it's priceless D