By raising the wing you have raised the center of drag of the whole plane a bit. This will increase the tendency to climb as the throttle is advanced and may require a bit more down thrust than you originally had inorder to compensate. Any other pitch effects are likely to be caused by inadvertantly changing the angle of the wing slightly when you move it. The downwash behind the wing has a large vertical dimension and the difference in down wash angle over the stab will be very, very small and unlikely to have a noticable affect.