After nearly a month of my cpp flying like crap, I finally found the problem. Had a bad servo. Wow, what a difference in flying! It's amazing, this thing flies like a dream now. I just wish I would have noticed the bad servo sooner. It looked like it was working properly, but it was not centering to the same position each time it centered. I have a new BL motor ready to install, does anyone know of a good place to buy a 9T pinion, where shipping costs are less than the cost of the pinion? (I thought the motor came with one, but once it arrived, it didn't have one)