How will just changing the wing incidence work?</p>

The wing and horizontal tail are setup relative to each other.  The fuselage is the rigid connection that allows that.  Change either one and you've screwed up the designer's plan for the two.  He set them to work with each other and you've blown that.  </p>

Also, the engine's downthrust is also affected.  What was it doing before?  Who knows, but it won't be doing it now.</p>

Lots of times trainers are designed to give good behavior landing and at takeoff speeds.  The downtrust and two incidences are chosen to be effective at the lower speeds the plane sees during those two times.   Can anyone predict what knocking out just the wing incidence will do to all airplanes?  Not really.  So how about the Telemaster?   If yours really is an average one, and somebody else knocked his Telemaster's wind incidence down and his was an average one, then maybe he could.  </p>

But the rest of us can only BlowSmoke at you.  We don't have a clue what CG you have wound up with, nor what your throws are, and got no clue if you're running the next size up engine or an old ControlLine engine with too much prop or too little and etc etc etc</p>

Aerodynamics really isn't just a checksheet of sound bytes.  Except for people who think it's simple. </p>