Yes the venom night ranger and walkera DF 60 are one in the same. Sounds like you could have a pitch issue. In normal mode you want pitch set at,,,
throttle at 0% pitch -2deg.
throttle at 50% pitch 0 to +2deg.
throttle at 100% pitch +10deg.
And for 3D mode you want, -10, 0, +10.