Hi buchtes
If you are new to rolling circles you may want to try what I did. I started with knife edge then basic four point roll then slow rolls then slow rolls that extend for a very very long distance. This teaches you about mixing rudder and elevator together (In my case any way; mode 1) and now I can do huge round constant rolling circles with either mulitple rolls or a single roll. What also helped was a airplane on a stick and the transmitter sitting on the table, I moved the sticks as I moved the plane though the circle.

If you can already do rolling circles but not with your wild hare maybe it is you setup, too much aileron, elevator, not enough rudder or something else.
lots of practice too.
Anthony