RE: Cermark Ultimate 40?
What I will do later on tonight is take a picture of what I use as the balance point. I also have the Great Planes CG machine but simply balanced it with my finger at the stated CG location in front of the Rear Cabine. To make this clear I will take a picture for you tonight and it should help you out. This is a great little bird, however, I guess mine had a few issues which you can read about in this posting. Hope this will solve your CG issue.