We do an OCF hop prior to starting the RAG BFM syllabus. I remember on mine, spending like 20 mins trying to get the thing to spin, to no avail. This included ridiculous stuff like full blower on one side, idle on another, full cross controls, 0 airspeed, even a full up wipeout of the controls. Nothing.....it would flop over on it's back, gently find nose down, and start accelerating, and it would be over. I did do a cool tailslide where I was falling backwards through a cloud of unburned fuel though....kinda neat. You can do some cool stuff intentionally with the FCS logic, and it will hang out all day long at like 80 kts in blower with the alpha tone going off, but I have yet to have it do anything that I didn't want it to do, in spite of my best efforts.