Well, I built one as my first RC plane ever. I tried it with power pack A and a 3s 850mah battery and it spun to the left on takeoff and crashed upside down or sideways the first 3 times. I figured it was the engine torque. I repaired the canard and tried a 2s instead. Now it flies straight but I can’t climb. I took off the battery cover to reduce weight and now it climbs a little but as soon as I bank at all, it falls.
Not sure why my plane seems over weight or underpowered.