OK - I've found whats causing it. My problem is that I'm used to a Hammond organ with a real Leslie speaker. The K7 rotary speed is not right to my ears, and its the edited effect that is causing the lurch. I edited the speeds and the windup/slowdown. But the edited effect affects the organ sound not only in the RH, but also all of the acc parts too. Switch back to an un-edited effect and the gapping disappears. What a pain! Can someone give me a solution please?

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Alan Minnear