Hey Guys! My Autistic 9 year old really wanted to get into the hobby so I found 2 of the cheapest nearly indestructible planes i could find. 1 is a $20 jet and the other a $30 b17. both work on differential prop speed to turn. Luckily I had the foresight to order extra props for them of varying sizes that just slip on nothing fancy. The pins for the "jet" motors are slightly smaller then the b17 but even though the ones that work seam to fit pretty snug we end up looking for them every other flight! we spend more time looking for and replacing props then flying. I was thinking a tiny dap of hot glue so i can still pop them off when they break (which only happens on the b-17) but i dont want any to accidentally get in the little mortors, another part of me though maybe applying a little heat but the props are so thin i think they would warp. I dont want to get a nice plane until we figure these out which are a blast to fly despite being the cheapest of the cheap Chinese foam planes, and they actually fight the wind which is awesome. But any suggestions? I mean I got these for him for Christmas and the bigger one has already gone through like 20 props. I've had the same problem with the cheap drones too