When throttling up and just before take off the heli will always drift left due to the torque from the blades. Mine sometimes drifts forward a bit as well. Just have to counteract with the right stick till youre flying .It wont drift left on you in flight .
Unless youre pretty good with it then goto the flat bottom blades till youlre used to it. And if you break lots of blades then you should buy a set of plasti blades. theyre pretty indestructable. JCS Hobbies has a site online for them