I love my tribute. I have a 46AX on it and the battery mounted just behind the canopy in the fuse. I used two foam pads behind the tank and put a couple fuel line strips behind the foam padding and I have no issues with foaming. My prop gets beat up a lot with the rough grassy field I fly in so i know its not balanced and still no foam issue with the foam and line. Also I used rubberbands and paperclips to secure the fuel tank. Mine has survived quite a few flights doing blenders and violent movements non stop. I keep waiting for it to break because I have heard several reports but mine has been very durable. This is a very fun plane to fly when its overpowered and if mine breaks i'll buy another for sure. I know the Mojo is better for 3d, but this plane is a solid performer and for the price its awsome.