Keep in mind that " Twitchy" is typically a setup issue not a design issue. While I would never discourage anyone from coming out to a contest with an old school airplane, your Brushfire will do very well in the lower classes but will fall short in the upper classes. The airplane just wasn't designed to do knife edge flight or snap rolls. Nothing wrong with the airplane, the game has changed. The new designs while not very attractive to some have evolved due to those changes. I certainly agree that it's difficult to appreciate them until you have flown one correctly setup. I have let a few non pattern pilots fly my Divergent. They were all impressed at how easy it is to fly. I had them do elevator only loops, aileron only rolls to demonstrate how well it held a line during the maneuver.