I cut and glued a popsickle stick across the balsa formers to have something solid to screw the battery strap into and held the velcro strap in place with the supplied screws. I was using 3D foamy carbon gear but it broke at the joint on a normal landing so I've been flying it without it and it seems to work fine. I had a heck of a time trying to keep the twists out of the fuse until I dumb thumbed it and broke the fuse right behind the wing and after CA'ing it back in place my fuse stays straight now. I've got about 10 flights with a Himax 2015/4100 and a polyquest 1500 3S1p and this thing is a blast. Harrier rolls awesome.