You have to play with the throws on both flaperons and spoilerons when you mix them with elevator. Too much flap will do just like you described. A good place to start is around 50% flap travel with full elevator. Also, the application of flaps creates lots more drag so you would have to compensate with more throttle to pull it through the tighter loop. It's all experimenting. I've never had one that was "done". My EF Edge is as close as I've ever gotten and I haven't even really started on it! I have made maybe ten flights on it and tuned on it five times. I'm still cutting back rudder throw and expo on both rudder and elevator. I may program in some mixes but it does pretty good as it is.
basmntdweller