I'm taking the 1527 out and selling it on eBay (the plane it was going in was destroyed by my niece). Just too much power! Not only was driving uncontrollable at higher speeds, but weird problems showed up. Like not being able to keep the motor in place (the mount would torque twist loose) or pinions from spinning free. Just ordered a 1521 from Mike. It should be a little more sane! Fun while it lasted though. Oh, the MMM held up fine to this current hog. It's still going strong, no thermals or BEC problems.