hanging blinds mechanism (Leominster HR6)

73.75 inches long, aluminium casing, housing the mechanism from which vertical hanging blinds are suspended. The mechanism is in working order, i.e. pulls blinds together/apart and turns them through approx. 90 degrees. Securing clips to attach the casing to the ceiling or lintel of window are included, but no blinds. Problem: some of the clips that hold the blinds are broken so some ingenious DIY repair needed.