Chucks right, I bought the .40 trainer from them..it is a brick with zero dihedral, not a trainer..and when I got to the part about checking the CG...well the instructions said about 5mm from the leading edge..well I know thats wrong so I email them....they dont know, but they give me the addy of a guy who might ..he tells me its 3.5 inches back "approx"...they do have some neat stuff so it might be one of those hit or miss things as far as quality goes..."you get what you pay for".....Rog