The battery tray is comprised of nothing more than 1/8" balsa laminated with 1/64th lite ply. It makes a very strong plate and has never failed me. I drilled some holes to allow cooling air to rise through the plate to contact the bottom of the batteries. Some velcro on the plate mates with the loop velcro on the batteries and keeps them from shifting laterally. A velcro seat belt is used around the tray and batteries to ensure they stay put during high G maneuvers. My batteries rest directly against the firewall and put my CG right at the recommended rearward location. I have plenty of room to shift them into the motor box if necessary, however this means shaving away some material of the firewall to slide them foward. I am hoping that it will not be necessary.

The tailwheel is very nice. It attaches using three wood screws to the bottom of the fuse and a single screw to attach the steering arm. The tailwheel is very well made.