Totally agree with SSD concerning the Chippy castoring tailwheel. It works very well, although it shouldn't.
The Jungmann has a tailwheel which locks to the rudder once a small leaver is released. On one occasion when the rudder had failed to engage correctly, boy did I know about it. Thankfully the issue raised itself during the initial taxying phase of the flight. With a free castoring tailwheel the thing was uncontrollable.
Whilst I will happily wheel on a Chippy, Citabria, Cub etc etc, I have always shied away from wheeling the Jungmann on due to it's Mickey Mouse undercarriage design which works well enough in three point. Tail up I wouldn't be so sure with that clap hands action and soft springing.