RE: Extra 300s 40 ARF
This is my favorite model by far. Mine is powered by a 91 Surpass. It fly's like its on rails. Point it where you want to go and it's there. It's easy to wheel land or three point. It will knife-edge all day. I installed a high torque servo on the rudder and it made a big difference. I moved the gear forward about a half an inch. My cg is about 1/4 inch behind the recommended rear cg. I did this to help it flat spin. Gap seal all the hinges. I have flown one with a 70 Surpass and I think it flew better than mine.
Takeoffs require little rudder if you go easy on the throttle. I am onto my second cowl. The first cracked after two seasons. The wheel pants are long gone. I fly off grass and they split within a month.
This plane will make you look a better pilot than you are. Enjoy it.