Hello MMD,  Patrick Boeckstijns recently asked about his English Steck
Duo-Art and I can't remember him getting a reply.  He is correct that,
on the English 80-note stack, the four nipples on each end of the
tracker bar are unused.  That is why they are a different colour to
the others which have been shrouded in rubber all their lives.

Looking at the tracker bar from the front there will be on each end the
tracking holes; these are slightly higher than the 88-note row.  Coming
in from the right you have the soft pedal, then the motor control, then
the treble theme.  From the left you have the re-roll, then the loud
pedal then the bass theme.  Hope this helps.

Brian Chesters