Is it just a bad design or is the plane possessed by some pitch demon? At full throttle it will climbs up at a pretty alarming rate and dive at low throttle. This is the first plane I've considered a real handful to fly. Magazines reviews from years back stated this kit had no bad habits. It's a Byron GeeBee R2 with a G62 built as per the plans. Does this plane simply need more down thrust?

Thanks,
Shaun