I think this is one of the most important things to do when flying helicopter. It made the world in difference in how my lama behaves I found the instructions on how to in the forum mentioned below in the lama thread on page 87 and it really is easy.
I made two photos showing the principle:
Balancing the wings completely removed the strange flying behaviour mentioned earlier. Because of the balancing I feel so confident in flying that I am flying around the house now.