There is a company in Lima, Ohio, that has the ability to manufacture
any type of hose one would need.  During the heyday of Player Piano
Company (PPCo), Durrell Armstrong and I had four sizes made to PPCo
specs which, as John Tuttle mentioned, were slightly undersized.  They
were all single-wrapped twill tubing and were pole cured as opposed to
roll cured.

This was the finest twill tubing that I have ever seen and satisfies
all of the requirements that John Tuttle mentioned.  If there is anybody
interested in having this tubing made again, contact Buckeye Rubber
Products of Lima, Ohio.  I'm sure they have a web site.

Nathan Woodhull