Matts, technique to determine thrust angles is a great one and works well. For this type of airplane I pretty much have a bench setup that gets me 90% of where I want to be. The other 10% comes slowly during the course of about 50 flights. The Midwest is a fairly easy airplane to work on but it does have a fixed stab so the first thing to do is block up the tail until the stab is at zero degrees. Next set the engine to zero degrees and 2.5 degrees right using Matt's math. Now comes the hard part, you will want to set the wing to .5 degrees positive. A symmetrical wing needs a slight amount of positive to generate enough lift to support the weight of the airplane. Without the positive angle you would be flying the entire airplane at a positive angle. Now adjust CG during flight tests so that no elevator trim is required. If you needed up trim then move the CG back 1/8" at a time. Once CG is set do some uplines. If it pulls to the canopy on an up line the add some down thrust, if it tucks the add some up. Next will be mixing. Do a flat turn using rudder only, it should want to tuck. Add a slight amount of up elevator mix and opposite aileron mix with rudder so that when you apply rudder you get yaw only. You will never get it 100% perfect but you will notice a huge difference while sequence flying.