Re the two organ sounds - it's not really surprising that they sound very similar, since they use the same basic sound sample However, if you look at the composition of the two sounds, in the Sound Editor, you will see that besides the dominant sound (Slow Rotor 1), the Key Click Organ has 3 additional components (16', Organ Click and Fast Rotor 2) at lower volume settings. So there is a subtle difference in the two sounds.
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Willum

After silence, that which comes nearest to expressing the inexpressible is Music.
Aldous Huxley
( especially when the music is played on a KN7000....)