I have written a more concise article that gives you the tools to fix almost any design.
This article is running( in A few sections) in the Pattern section of Model Aviation now, because the article is so large .It explains all the reasons why I do what I do,and how we got
Did the series just start in the most recent MA?
I am just starting the trimming process for a Focus II... not so "modern" of a design anymore, but your trimming procedure certainly can't hurt! I tried your older "Triangulation" system and it works very well for such a simple process.