Hello, I just got my Wl toys v959 quadcopter, and it works and all, but when I take off, 2 propellers, one in the back, one in the front, seem to not respond until I set the quadcopter speed to 100%. Also, when I take off, the quadcopter does not take off vertically, it takes off sideways, making it hit a wall or something, which scares me since its pretty delicate. I checked the motor connections and they are all fine, batteries are fine in the remote, battery in the quadcopter was fully charged when I had this issue. Anyone know what the issue is? Or is there actually one?