I'm trying to get my UltraStik 40 with an OS FS 70II to balance. I put it on the balance machine last night at the recommend balance point and I had to place 6 oz of weight on the elevator to make it balance. Now I know that I can't secure the weight on the elevator, but I figure by the time I move the weight to the wing saddle opening, I will have to add about 18 oz. Do you think that the is too much weight in the airplane? Anyone have any suggestions as to what I can do to keep the weight down. The battery is as far back as it will go and I really don't want to cut the covering, if I don't have to. Should I just save the OS engine for another airplane?

Thanks for the help