This thing loves the tight spaces, no washout from the blades so it doesn't get sucked to the walls. One thing i did is that i noticed that forward flight would level off after a few feet to where even full forward and the thing would be at a hover, i simply fixed this by popping the left link (if looking from the front) off of the swash and giving it 5 turns clockwise to shorten it. It flys much faster forwards and doesn't level off. It still has a good amount of backwards flight too. Here's my video
http://www.youtube.com/watch?v=879rWWl6xt4