I added a little lead to the tail this weekend and it was a tad more fun. I am going to add another bit, equal to the first. That should be about right. I am just behind where they had the CG. It was too stable. It hovered fine this time but flipped a bit better. Landings are still like a trainer and takeoffs can be done normal scale like or vertical into a hover or what ever you want. It is getting to be more fun. Just a touch more unstable and it might be more of what I expected. Nice plane for a second or third. Ballanced as the specs say, anyone can fly it. I have about double the control throws that they call for and it is fun. Slow them down and anyone could fly it. I bet you could teach on it as well with the right throws.