| Digest Nr | Subject and Author |
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| 2012.09.14.03 | Leakage in 1970s Duo/Art Player by Aeolian, from Thomas West |
| 2012.09.13.11 | Leakage in 1970s Duo/Art Player by Aeolian, from Bill Maguire |
| 2012.09.13.10 | Leakage in 1970s Duo/Art Player by Aeolian, from D. L. Bullock |
| 2012.09.13.09 | Leakage in 1970s Duo/Art Player by Aeolian, from John A. Tuttle |
| 2012.09.13.08 | Leakage in 1970s Duo/Art Player by Aeolian, from Dale F. Rowe |
| 2012.09.11.04 | Leakage in 1970s Duo/Art Player by Aeolian, from Thomas West |
| 2010.08.08.05 | Welte Mignon Licensee Stack Leakage Problem, from Jonathan Holmes |
| 2008.02.08.06 | Measuring Valve Seat Leakage, from Spencer Chase |
| 2007.10.11.07 | Player Action Leakage Rate, from Bill Robson |
| 2006.02.20.05 | Testing Air Motor Leakage, from John A. Tuttle |
| 2006.02.20.04 | Testing Air Motor Leakage, from Pete Knobloch |
| 2006.02.19.02 | Testing Air Motor Leakage, from Bob and Sonja Lemon |
| 2006.02.16.08 | Testing Air Motor Leakage, from Bruce Clark |
| 2006.02.15.11 | Repairing Air Motor Leakage, from John A. Tuttle |
| 2003.02.08.05 | How to Reduce Leakage Around Wooden Pushrods, from Jeff Davis |
| 2003.02.04.07 | How to Reduce Leakage Around Wooden Pushrods, from Bill Mackin |
| 2002.12.12.06 | Simplex Player Action & Testing Action Leakage, from John A. Tuttle |
| 2002.10.30.07 | Leakage in Bellows Pump & Reserve, from Eric Shoemaker |
| 2002.10.29.07 | Leakage in Bellows Pump & Reserve, from Bill Mackin |
| 2002.10.28.04 | Leakage in Bellows Pump & Reserve, from Dave Talcott |
| 2000.01.26.15 | Duo-Art Valve Leakage, from Craig Brougher |
| 2000.01.26.14 | Duo-Art Regulator Leakage, from Julian Dyer |
| 2000.01.25.14 | Duo-Art Regulator Leakage, from Bob Taylor |
| 2000.01.24.14 | Duo-Art Valve Leakage, from Craig Brougher |
| 1998.03.03.12 | Mystery Leakage in Air-Motor, from John A. Tuttle |
| 1998.01.02.13 | Acceptable Leakage in Player Piano, from Gerry Ceccarini |
| 1997.12.05.14 | Testing Duo-Art Note Leakage, from Julian Dyer |
| 1996.09.09.08 | Duo-Art Stack Leakage Measuring, from Pete Knobloch |
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