i moved the fan back and still had to add 4.5oz of weight to the tail.
the ducts on the hatch are already cut out for the controller....
for the battery cooling... there is a hole in the intake left over from the glow fan for the starter wand. when the fan is running it pulls air from the front wheel well to the hole in the intake.
the batts have 4 cycles on them... they came out of the plane yesterday at 135.8 degrees (it was a hot day).
I will add naca ducts right in front of the battery tray later.