We just test flew a Hacker power DP Extra and it snapped just fine. One thing I've found over the years is sometimes I take out too much rudder on low rate and the plane barrel snaps like you say above. I use high rate aileron (will snap on low rate(not too low), just not as crisp) with low rate rudder and elevator. Low rate Elevator is about 10 degrees and low rate rudder is enough to climb a bit on KE.