I would have to seriously doubt that ALL the reeds on the draw are mis-aligned in the reed slot, the windsavers wouldn't allow any light thru to see anyway. Sounds like the wind savers have dried to the reeds and have stopped them from activating. At fifty years old the harmonica is L O N G overdue for a tune up, maintenance is paramount to keeping a chromatic in playable condition. At fifty the harmonica could contain leather windsavers as that was the material used before mylar. If the wind savers have dried and jammed the slot the reed won't/can't oscillate as no air is reaching it, or the material is blocking it. Without seeing the harmonica it is difficult to correctly diagnose. If you treasure the instrument and feel it is worth reconditioning there are reputable repairers/cutomizers available on the web.
You darn right!
Listen to SP, not BT! lol