Kua unuhia katoatia te mandrel o te rivet. He tika rānei kia waiho he kōhao wero i roto i te tinana o te rivet i muri i te whakakī?

Kāore he tohu, nō roto i te korenga o te whakapūmau. E ai ki te whakaahuatanga i runga ake nei, kāore he mahi a te whakapūmau i tēnei wā, engari he pine anake.