RE: pt-40 or the aircore 40 trainer?
I started with a Tower 46. Always reglue the servo board in a ARF. I now know this.
Next plane was aircore 40 trainer. Flew it once and NO LIE gave it away. Next got a PT-40. Best planer ever. Did fly bys 2 feet off the ground wide open within 2 hours of having it. Pulled any stick and all the sticks just to find what happens. When it got ugly all that was needed was to let go. Two seconds later it's upright flying again.