Birmingham University,

The Drawstop Machines for the Swell, Great, Choir & Solo were all re-leathered.

The large internal leather diaphragms which push and pull the slides on and off  had perished. Several stops were inactive and others were slow in operation during

The internal secondary action motors were also showing signs of wear. These were re-leathered with fine quality white skiver leather.

Here you can see a split in one of the diaphragms.