It is all in the pre-op/post op. All said, we do not live in a perfect world and it is not difficult to place blame. The energy path must be translated..
Easily said but not always easy to apply. Most systems are based in a XYG theory. Three points should get you there. That applies to most pre-reg systems. If all are not in (close to) perfect synergy then yes, there can be questions as to whether this works. I can tell you it does.
Not selling anything just been there with foots on the ground!