I have moved the CG back 2 and 13/16 . I had to add 4 oz. to the tail after I moved the battery as far back as I could. It is now under the pilot and it is a 6 volt battery. Boy that Rossi 60 is heavy.....lol. I bet this plane lands fast. I am going to put her on the scales tonight. It feels like it is well over the 5 lb that it was suppose to weigh.