Unless you have so much pitch set in your main blades that the tail rotor cannot overcome it, moving the tail servo forward should get you to the point that the heli spins in the other direction ( clockwise ) if you move the servo enough... If the gyro wasn't initializing, you would have no tail control. The tail servo will not move if the gyro does not initialize. The rotory knob on the left side of your transmitter has a lot to do with initial pitch settings. If you have a pitch gauge, you can measure pitch through the throttle range by unplugging the motor and moving the throttle stick on the transmitter. If not, you can eyeball it to ballpark the setting. The pitch should be pretty close to flat ( no pitch ) until near mid stick and then max out somewhere around 10 degrees ( eyeballed) at full throttle. Again, you eyeball it with the motor unplugged. On my Esky transmitter, the left rotory knob is between 12:00 and 1:00 and the right rotory knob is about 9:00, if that helps. Also, if you are running the brushed motor, it can get weak in a hurry and give you symptoms like you are seeing making it nearly impossible to hover and get the tail adjusted right since you have to have tons of pitch to overcome the low rpm headspeed.