It is an ARF. I have built 2 kits and this is the 4th arf I've built. I took the tank out and put the battery directly behind the firewall and now it only takes 8 1/2 oz's lead. WOOHOO I've worked on this thing trying to make it right for about 30 hrs now and it still is not right. The servo's are mounted in the servo tray that was already glued in by factory. You bet I'm gonna call them tomorrow. I jsut hope I can keep my cool when I do. I'm really PO'D right now.