zero drag brake, battery at full front, BUT in the rear of the tray I have about 3.5oz of weight. I didn't use measured weights, I used heavy heatsink plates from some car audio amps I disassembled a while back. The sinks fit well into the spot and I just double-sticked them to the chassis back there, right in front of the trans.

BTW, I have vids of my races on youtube under my name, if you really want to see it fly. I have a nose-up issue some times, but that's how I leave the jump when it happens. The rest is all throttle/brake control.