G'day Steve,

Without digging out the diagrams, I gather the 'Free Bass' system is a mirror image of the outside 3 rows of the right hand side. (Of course, if your box is only the size of the Hohner Corona, you may only have the 3 rows on the right ... although the other two rows are just links to the first three and don't use any more reeds .. just keywork.)

I do have the Hohner diagrams ... somewhere in my filing drawers ... so I can scan those in and e-mail to you ... if you don't sort it out in the meantime.

Regards,

Bob