Two targets, not one interchangeable patch

Target I: non-tip isolation.

A compact patch on which support excludes every row except one. This may decide failure for an identified family and a specified correction class.

Target II: coincidence.

A compact patch meeting $r=z-a=0$. All potentially contributing rows and the cone-tip transition must be retained.

Target I does not solve Target II. The support-isolated Em01-G failure concerns its own identified application EmG; its coefficient is not imported here.