welcome to the forum, would be nice to have a name instead of a number to “talk to”.
_filletEdge is sensible and can not solve all fillet-problems. but it also needs proper input:
your surfaces do not meet at an tangential edge (edge continuity)
so there is a small kink an this will cause the violett and green fillet not meet proper.
Solution: build surfaces that have a proper tangential (G1) or curvature (G2) continuity. check out _loft _sweep2 or _blendSrf
check help and options for the command.
geometrically it is the same issue as (1) but much more obvious: the 2 fillet-Surfaces miss a connection because the initial surfaces meet at a kink / sharp edge
solution: also add a very small fillet for the (visual) sharp edge.
for example a R0.02 and then there is a solution for the R0.2 see red surfaces in screenshot:
hope that helps, kind regards, -tom