Yes, I forwarded the numbers in the SDK forum, so they maybe gonna adjust that as well like with the C172.
Thanks to you and CpMoustache for pointing out the better values!
Feels like half a win, at least they acknowledge higher numbers should be possible,
but keeping the starting point of 0.2 as an recommendation is still very weird… 0.4 - 0.7 as lowest option I could understand, maybe for some special glider fuselage, but other than that it’s ridiculous 
Hopefully developers are looking more into it when they change the recommendation.