Home / Forums / Melodica construction, repair and maintenance / Suzuki B24 Bass Melodion – Gapping / Reply To: Suzuki B24 Bass Melodion – Gapping Reply To: Suzuki B24 Bass Melodion – Gapping August 14, 2018 at 1:19 pm #10185 KevinParticipant I don’t have a B24 (refuse to pay that much for an instrument of less than 2 octaves). I did look at my M37C and it also has the bladder. Looking at the inside of the reed cover the bladder only covers a small straight drilled hole (about the size of the screw holes.) I covered this hole with a piece of duct tape and reassembled. It seems to play fine to me? I Don’t know if the B24 has the same one hole construction but it’s a simple non-destructive, easily reversible experiment to try.