The tuner worked great, I mounted it last night tuned up an E and a G string with and electronic tuner and it works flawless. Then I tuned an A string and left it overnight. It was still tuned perfect this morning! Now all i have to do is make 4 more to convert this thing. Its a fretless 5 string i built for a friend about a year ago. I will be making it headless, extending the upper horn, reshaping the lower horn, smoothing some spots out and fretting it. This thing was fairly neck heavy on account of the shorter horns.