I don't know how similar the Aeolian Grand is to the Orchestrelle
(one is vacuum, one pressure) but I need help with the material to
use in recovering the pouch pneumatics inside the stack.

My unit had been recovered unsuccessfully with thin leather and
I need to know what to use to do it correctly, and the original
dimensions if possible.  Also what is best to use for the motion
pneumatics that actually move to open the reeds.

Thanks, John McClure