Have .46 size Phoenix ARF SU31. Put a OS 70 FS. Found that neutral cg not good for health. After reinstalling gear and new cg flew much better (found lead mounted on top of lower firewall support - factory). It still is a handful to fly. There is no float on landing - it will stall and crash on if you do not keep speed up - fly it to the ground and flair. I have renamed it the "Devil Sled"...