Jim I also have one of your planes,Katana,I haven't started it yet,but I am very impressed by the Quality so far,even the owner of the LHS I got it from said the same thing,he couldn't believe the quality for the price,I am using an OS 1.60 with a TurboJett muffler,two HS 225mg servos for the elevator in the tail and a HS 615mg for pull-pull rudder up front,I'll post flight results as soon as I get to fly it.
Mike.