I had to go through a whole ordeal with improving the hovering abilities with this plane.

It had a 3W 100 old version on it and I traded it out to a DA 100. With the trade, it became nose heavy (the 3W was much heavier, but the DA had to be spaced farther off of the firewall...moving the engine weight farther forward that with the 3W, making it more nose heavy even with CF gear). To move the wieght aft, I didn't want to put any dead weight in it, so some battery boxes were rigged up aft of the CG. One in the tail near the servos, and one on the 2nd former in the fuse...that CG is now adjustable.The plane is a dual reciever setup, 2 batteries can fit in the very aft box, or one battery can go in the aft box and the other battery can go in the more forward box or even closer to the CG.
well the boxes came out very nice and worked fantastic...but the CG was way too far back with even one battery in the farthest box and one in the other box. The plane balloned on landing like crazy...but the hovering was pretty much effortless. I moved one battery in front of the CG and left one in the aft box, but have not been able to test that out yet. I love the setup because there is a lot of room to work, it has a hatch in the back now and all. I should get pictures one of these days.

So to answer your question, with the aft CG I am having balloning problems and I am having the plane snap out of loops(I expected that). The CG I had with it balloning a great deal, was behind the recommended marks, I don't know where it is at the moment. I will have to get on that soon and try to help you out.