After breaking probably 4 props and several prop adapters, I switched to a non horizon 5x3 prop. I used a carbon fiber prop since I had one in my box. I did have to use a small washer on the screw to hold the prop on since it had a larger center hole with a spacer to fill things in. When the plastic prop adapter broke I got the aluminum one from small parts cnc, and used a prop saver mount on that. My carbon prop is now mounted with a prop saver on my timber and I've not broken anything in a long time. That's partially because I'm a better pilot now, but this setup has survived multiple noseover landings, which killed multiple props/prop adapters previously.