Hello again!  The 10.5-inch-wide 58-note rolls with square drives
can actually be played on the 65-note piano.  With a little mechanical
skill, you could make a removable "missing link" adapter of brass or
steel (but please don't do like an unknown ex-collector in Sweden,
driving in projecting drive-shafts in both ends!).

Be sure, however, to tape shut the seven lower-most (or was it
upper-most?) tracker bar holes!

Best regards,
Christofer Noering
Stockholm, Sweden