I purchased the standard (recommended) Punjet setup from FT - the Power Pack A (Minis) and I cannot get it to fly. I am using the Loong-Max 800mAh 3s 20c Lipo Battery sold on FT, and the setup together doesn't produce enough thrust to fly. Also, I built according to instructions, and had to trim over 1/4" from the vertical stabilizers so the prop could clear. Battery is fully charged, prop is facing the correct direction, motor is turning the proper direction, no extra weight on the airframe. What am I doing wrong?