Hello Everyone, I recently bought a used Korg DT-1 Pro Rack Tuner. It has four different modes on it: calibitrate, slow, fast, sound, and mute. I've put it on slow and fast mode and I still encounter the same problem. The light jumps around a lot! I can't get it to stay on pitch. Even when it goes in the center it doesn't stay there for more than a few seconds. Is it my tuner or do all rack tuners do this? I should note that when the tuner goes in the green it makes a constant clicking sound. So I know there is one thing wrong with it. I am considering buying the Sabine RT-7000. I had a Sabine Hand Tuner, and I absolutly loved it. Before I buy the Sabine Rack tuner i'd like to know if all rack tuners jump as much as my Korg DT-1 Pro. Thanks, Greg P P.S. Both Rack Tuners and Hand tuners say they are accurate up to +/- 1 cent. Does that mean that hand tuners are just as accurate as rack tuners?