I am having a big problem with recording a Recorder - you know the instrument you played in 5th grade. The microphones I have, audio technica 813a, produces a sort of mechanicaly reedy sound. I have tried changing the gain on the preamp, turning down the mixer, and changing distance to the instrument but with no success. I've heard that this instrument creates a lot stress on a mic. What microphones should I use? Any help is greatly appreciated.