Whakaratohia te ahua o te pungarehu tawhito o te SS tarai (potae) ki te ahua V me te W i mua i te pupuhi.
Ki te hanga i te SS ki te U i mua i te kanohi i te SSite kua whakanuiahia te whakairoiro graphite, whakamahia ana me te KXT E1530 mīhini mata.
He pourewa pumau iti, he mea motuhake hei hanga mo te whakaputa i te kirikiri ka pakaru me te whakanui i te karaati graphite.