I got my friend an Arris fpv250 quad for his bday a month ago and it has replaceable arms. And he's breaking them things left and right. He's still learning and I know that it's not a top notch frame or anything it was meant just to get him started. We're going to start building him one but I was wondering if anyone had any ideas on how to strengthen the arms unroll then? They are of course breaking at the screw holes. Any help would be great thx.