RE: Composite ARF Tucano Build
Let's not forget that C of G position is very much personal preference. Some people prefer a more forward C of G, others more rearward. What one pilot sees as the "perfect" C of G might be anything but for another. The fact that amongst the experienced pilots here, some are flying it at the wing bolt and find it great, and yet others are flying it forward of that and are equally happy (after trying both) attests to that. There is not a right or wrong here.
If Jan generally flys his aircraft forward of factory recommended settings (and I know Jan, he has been flying jets for many, many years and has more experience than most of us will ever get, and is an excellent pilot), then his request for the balance point with 12oz in the nose is well founded, for his particular style.
Hopefully someone can reply with the requested information :-)