| Digest Nr | Subject and Author |
 |
| 1999.04.15.05 | Airflow and Leak Measurement Equipment, from Phil Dayson |
| 1999.04.11.07 | Leak Meter, from Johan Liljencrants |
| 1997.12.03.14 | Controlled Leak for Loud Duo-Art, from Phil Dayson |
| 1997.12.03.13 | Controlled Leak for Loud Duo-Art, from Chris Morgan |
| 1997.12.02.14 | Controlled Leak for Loud Duo-Art, from Bill Chapman |
| 1997.01.11.07 | Wurlitzer Vacuum Leak Found!, from Gordon Forcier |
| 1997.01.09.06 | My Band Organ Has a Vacuum Leak!, from Gordon Forcier |
 |