Sorry Lorenzo, I was not there
haven't got a clue as to the P38. Maybe contact the club, they will have a list of participants/pilots and models noubt:
http://www.mfg-aspach.de ,
info@mfg-aspach.de .
Or else Philipp Gardemin from
http://www.aufwind-magazin.de ,
Philipp.Gardemin@aufwind-magazin.de.