Tree, the climb tendency is not only related to your wing incidence but also to the tail incidence and CG position. You need to first ensure that the wing and stab angles are "in the ballpark" for the type of design and intended style of flight and then work the CG to set the trim as it should be. Overpowering a model with angles that was intended for moderate flying is a good way to have one that wants to climb under full power.

What model design is it and what are some of the specs?