This week I flew and crashed my MTP3. I know, I know, I crash more than I fly sometimes!
I learned a lot from this experience;
1.) Rudder/elevator needs to be much larger, or keep it at a standard of 1/3rd of the wing area
2.) Don't expect control surfaces to work if they don't have any air going over them
3.) CG (at least for me) never really works at 33%, it needs to be more like 25% or even 20% on my clark-y airfoils.
4.) While seeking for a light aircraft is a great goal, having something so light with so much drag that when the motor turns off it practically stops mid-air, may be a bad thing. I donno, just something I'm observing.
Instead of fixing or making a MTP4, I'm going replicate the easy star as closely as possible and make a "geek star" (aka. mygeekshow version of easystar) that I will then improve/modify to work better for FPV/Drone objectives.
Learning, learning. Just be patient with me!