From what perspective are you flying the helicopter. I stand behind the machine looking at the tail. Basically, viewing it from a pilots perspective. When I throttle up, the nose tends to rotate counterclockwise. I have my rudder trim (left stick) half way to the right at the beginning of the battery (LiPo) and then gradually move to full right trim and still have to add a small amount of right rudder to keep the tail straight in front of me. Upon lift off, it tends to want to move left and aft, so I conteract with right cyclic and a small amount of forward cyclic and then work at hovering in one spot. I am getting better at it and ready to add some upgrades, HS-55 servos and ball studs on the horns and adding a HH gyro and speed control. I have been flying at least one battery a night for the past three weeks. The bottom two trim pots on the machine are full clockwise. Also, have you had the wires disconnected from any of the motors, if so, did you reconnect them correctly.