There is this third situation that may happen to models with thick airfoils:
ORIGINAL: LNEWQBAN
ORIGINAL: Guzzi32
I have a Fliton extra 330s freestyle and I can get it to balance a little nose heavy on a CG machine but I have to be right dead on the angle where the plane will balance or else the tail or nose will drop in a second.
Greg,
Check this thread out, which explains a similar problem:
http://www.rcuniverse.com/forum/m_95...tm.htm#9527315