Raideron,

Just so YOU know--and don't let anyone else in this UCD forum read this--I maidened the Kat today. The ST .45 did everything I wanted it to with a 12.25 x 3.75 prop. If I ever try the .51 on it, it'll be just for fun. The Kat doesn't "float" as much as I'd like, but she did everything I asked of her: knife edge circles, hovers, inverted spins, elevator, accurate loops. She flies inverted with more "up" elevator than I'd like, maybe a CG change is due (now at the book's 5.25 inches). But, in three 14 minute flights, I really didn't put her though her stuff. She has more elevator and rudder authority than the Twist, for sure.

Jack