I just pulled the UCD .46 from the box. I will be using a OS.50 w/Macs pipe and 11 X 6 Apc prop, 6volt 600 mAh reciever batt pack, and JR 537 servos. The .50 pulled the Twist clear out of sight vertical. I have seen the UCD .46 hovered with a .46 and was recommended by a seasoned 3D flyer to stick with the light setup. Any balancing or throw problems that I should know about? I am thinking of leaving the wheel pants on the ground. How far back or forward from the firewall should I mount the engine? I've read of reinforcing the landing setup. I had a Great Planes Tracer that I had to reinforce. Give me any building hints. Thanks[8D]