I've got a Midwest Citabria with a bit of a directional controll issue. This is the second one I've had. The first flew absolutely great. The second one wanders on the heading when flying. It just seems unstable. Balance is same as first. Have checked throws, incidence etc. Only difference is the new one has pull pull cables on rudder. Other flyers at club have checked out tension and say cables are tight enough. I've been flying models for years and am scratching my head on this one. Maybe some more down thrust may fix things.

Art