Now, I ve tried everything. Been through the tutorial and the manual, tried plain and controlled rounding, altered the topological levels, everything.
Any help is very welcome.
For more complex shapes, sometimes i need to select just the right segments, not even the full face. Some wish Z would handle this thinking, i can think of other priorities. Rounding is already powerful. Typically on curved edges, numerous points that may be spaced relatively close together will lie on that edge. Rounding stands a better chance of working when the segments that make up that edge are spaced further apart.