Mpira wa mpira wokhala ndi zitsulo zokhala ndi kaboni ndi chromium adasankhidwa ndikuwuma kuti apirire kupsinjika kwakukulu pakati pa gawo lozungulira ndikubala mphete.
Carbonrizerrizense mphete zamkati ndi kunja ndi njira yovuta kwambiri yolimbitsa mafuta ambiri a TPI. Mwa mankhwala apaderawa, kuuma panjira yamasamba kumakulitsidwa; zomwe zimachepetsa kuvala moyenerera.
Chitsulo choyera chimapezeka munthawi zina za TPI zomwe zilipo tsopano, zomwe zingathetsedwe zimapezeka moyenera. Popeza kutopa kulumikizana nthawi zambiri kumachitika chifukwa cha zovuta zomwe sizikukakamira, kunyamula masiku ano kumafunikira kuchuluka kwaukhondo.