Our Gyro range includes head locking as well as digital capable gyros. Gyro's are extremely sensitive devices and the following important information should be noted; 1) Always use foam padded double sided tape to secure your gyro. 2) Due to different climate humidities and temperatures, be sure to have your Gyro switched on for at least 5 minutes then switch off before you start to make adjustments. 3) If you find that your helicopters tail continues to 'hunt', try adjusting the servo linkage to the outermost hole on the servo horn. These little techniques can make a world of difference to your Gyro's performance.