I cut a new fues for an ARF Flite Streak. Added an inch or so to the front and two inches to the rear, increased the size of the stab and elevator. Better for stunt. Smoother round maneuvers, more stable, feel like it goes where it's pointed. Same idea, as Paul noted. The Twister is very similar in moments and airfoil to Al Rabe's Mustant. Doesn't look that way. But the airfoils are virtually identical. Moments similar. A few years back I matched them up. In out club we recommend wingtips, and hacking up the profile side view until you think it's pretty. Dan Banjok, on the other hand, thinks the stock Twister looks good. No. No. No. No. Ugly!