Actually the Dora recovers very easily when stalled, but it departs to easily into uncontrolled flight at low speeds.
Also it seems like the Dora doesn't like to bring here nose around in a wingover. At one point even with full rudder the plane "literally" stops the nose movement, wobbles around and is very likely to stall out for a brief moment.
I might try some flip overs/arounds with the Dora. Wonder if there is a way to keep her controlled in the vertical even under 100mph IAS.
EDIT: Did a quick offline try, filmed it and closely watched the results. I was able to reverse the Dora at very low speeds, some close to 20mph IAS. It was in the way that i tried to go as close to the vertical as possible as long as i could, at some point (~50 IAS) (otherwise torque will induce a spin) you have to kill the
engine and the plane will stall, once the nose drops to the horizon you have to push the stick forward that way you get the nose low and the plane recovers, at that point restart the engine.
I noticed a couple points, first engine torque will almost guaranty a spin at very low speeds, any control input lead to it. With throttle cut it is less prounced but still there.
Second the Dora wants to go hard to the left in the vertical and so a good amount of right rudder is needed to keep the nose straight up. It also wants to roll, but that is easily countered by aileron.
Third, at very low speed the Dora refuses to fall over the cockpit. Even when i tried to keep the plane in a position that would favour the the flip over the cockpit the plane once stalled flatens out, cockpit up. Even flaps won't help it here.
The P38 on the other hand literally reverses itself once below 20mph IAS. Though it will need some experience to get to the right position after the reversal, its much easier because the way up is very harmless. The counterrotating props really give it an advantage here.