Knowing you, I'd say you are too impatient but thats another matter all together.
Yes, the outside of the curves(belly) did crack a bit but only superficial. I reduce the area to be bent to one ring on the belly side also so I get a good bend but leave enough wood that can and usually is removed, removing the cracks with it. I add super glue to the crack for insurance. When I heat wood to bend I wait until the weight of the bow begins to pull the heated area then I pull it down slowly until I get to the caul. I also make slight corrections to alignment. More is always needed later too.
Hows life in Germany these days? Pat