Schmidt's Music Rolls, located here in the Washington, DC area, makes
recuts for a wide range of organettes, including Celestinas.  I believe
he uses some sort of computer setup to do them.  You might want to
contact him and see if he's got any advice.

His web site is:  http://world.std.com/~pschmidt/smr.html

Hope this helps!

Jim Canavan
cybrflash@aol.com