That's the problem.. you trust someone more then the other, even if hard evidence were brought up here and taken point by point. Even a first grader understands..
It's not that Yo-Yo is not a good engineer, but sometimes, from lack of sources, or even wrong sources, mistakes can be made, and it takes a bit of courage to accept those mistakes and repair them.
We want, at least, the trim tabs that were on the K-4. If the effect of the trim tabs are calculated in the FM, they surely need to be corrected accordingly.