Randy,
I put my cg "dead on" as recommended per the instructions
and my STA flies perfectly. It may be slightly nose heavy but
not very much.Or at least to the point that I feel the need
to move it back.

For what little time it takes,and at no cost, check your
cg, this way at least you'll where it's located and won't
have to guess at it.


Regards
Roby