Ney,

Are you running any elevator trim, and what is your wing incidence (assuming the horizontal stab is at 0 degrees)? If you have some elevator trim then it could be affecting the plane in one way or another.

If it's of any use, a "common"(?) setup for the Wind 2m we've been using here in Oz is to fully, positively, max out the horizontal stab incidence with the adjusters (but both sides equalled) and then with the plane’s tail raised so the horiz-stab is at 0 degrees, make the wing +1 degree positive.

Also (...bit subjective, but here goes...), it seems that some of us have had different wing incidences from the factory. For example some of the 'newer' Wind 2m's have been coming out with the wings at the +1 degree per the setup described above. However on mine, per the setup above, the wing incidence from the factory was only just barley 0 degrees (one wing-side was 0 deg and the other side was negative to that). As such I’ve installed (wing) adjusters and elongated the wing-pin holes so as to get the +1 deg pos. ...Note mine's an 'earlier' Wind 2m.

Cheers,
Neil