Hi Carlos, do you have a mold for the tub underneath the airbrake? Also what kind of tanks do you use? I have a 2.5L coke bottle or a fiberglass Rookie tank, both might fit if I enlarge the hole in the main spar a bit. I see lots of people using a rectangular tank in front of the main spar, doesn't this affect the CG too much?

Regards, Bart.