here is a pic. of mine.....notice i made the droop tips for it....extras look unfinished with a squared off wing tip....also....no down thrust.....i gave mine 3 degrees right. i power mine with a scorpion 4025-12 brushless outrunner 15 x8 apc prop....4250 lipo...futaba radio and bb servos. 3 inch mpi wheels as i fly off grass. any other folks ever use droops on a 330? will certainly help the tip stall factor!! in my opinion....the extra was never finished.....take a look at the lancair.....its a hipo airplane....it has droops. of course this is just my opinion.....and my airplane.