I have had nothing but positive results from aviation models. What airframe do you need the cg for? I am sure I can get it to you. Sammy is a great guy to deal with and I have never had any issues with him. I would not be surprised if he did not know the CG, but would be suprised if he did not tell you he would find out and get back to you. Let me know what plane it is you have and I will make certain you get the info.