Wouldn't it be the other way around? With the horizontal stabilizer set at 0 deg, the leading edge of the wing will be higher than the trailing edge, and the angle of the wing will be 3 degrees. I haven't heard of a model with -3 degrees of incidence unless it's a biplane with the top wing set at -3 degrees and the bottom wing set a 0 degrees, or a 3 degree difference between the two.

Hogflyer