Bonsai,
One thing I forgot to mention is to be sure to remove the factory built in downthrust. If you search many of the Aquastar build threads here on RCU, you'll learn that getting the plane to ROW is next to impossible with any downthrust. I built mine with zero degrees thrust. Thought of this while flying mine today. It was fairly cold but hardly any wind. Oh and if you use the motor, esc and battery combo I did, you'll see average flight times around 15 minutes without the motor cutoff kicking in.

John