I'm going to get a custom cut tru-turn for a 15x6 APC I plan on testing out in the next week or so. http://www.tru-turn.com They have a 2 1/4" which if you let them know what prop will go on it they can custom cut for a small fee if needed...they are well made and balanced!

eness76 - I'm going to do what you are with a hatch to begin testing moving the CG back...mine is at 5" now and flies and hovers great but I am curious to see what differences the move back around 6 will make.

I just finished up my review on the U-CAN-DO-3D. I have some pictures and videos. I also added 2 washers to obtain the factory recommended 2 degrees of right thrust. I have not seen a reason to add more though yet. I hope you all enjoy the review when it's posted in the next week! I worked hard on it to present it well through the internet medium.