Hello, I am a retired organist and I own a Rodgers 750. While playing the organ yesterday I activated the 4' Octave Stop on the Great Division and to my surprise I was able to play the Great Division 4' Octave Stop on both the Swell and Pedal Division without coupling them to the Great Division. After going through all the stops I found that the 4' Octave on the Great Division was the only stop that played on both the Swell and Pedal Division when it was activated. Any technical advice from organ technicians or hobbyist is welcome. Barry Retired Organist Rodgers 750 Allen T15B