Home / Forums / Melodica construction, repair and maintenance / My Hohner HM 36 Issues.. / Reply To: My Hohner HM 36 Issues.. Reply To: My Hohner HM 36 Issues.. March 14, 2014 at 5:12 am #1979 Melodica-MeParticipant Wow, that’s not normal. My piano 36 just has un even gaps between the keys, but do not get stuck. They do clank as a norm.