I have never lubed any part of my CX2 - should I? it's had lots of flights and I have a bag of broken rotors to prove it. Those crashes were due to me learning to fly at first and then learning to fly outside in wind. I'm starting to get it too but still shatter the occasional blade due to mid-air blade strikes. I would like a bit more info on lube though - please expound. As to the yawing tail - it's almost got to be the proportional trim pot.