I think there is a problem[]. The airplane balances at 5.5", in order to get it to the recommended 4.5" it would take 12oz of nose weight. This is with a Graph Tech tail wheel and batteries foreword as much as possible! My engine is a FPE 3.2, light but not less then a BME 50 or DA 50 with the needed motor mounts. I sure hope the recommended CG is a misprint or the weight issue is void[:@].