Ko te kounga o te mata o tePae Koki Waro maitai, kua tohua i roto i te paerewa, a ko te whakaritenga whanui kia kaua he koha kino i roto i te whakamahinga, penei i te stratification, scarring, cracks, etc. Ko te awhe e whakaaetia ana o te Angle geometry deviation kua tauwhāitihia i roto i te paerewa, e uru ana ki te piko tohu, te whanui taha, te matotoru taha, te Koki runga, te taumaha o te whakaaro me etahi atu mea, me te whakatau kia kaua te koki maitai e whai torsion nui.