Uma kuziwa ezintweni zokusebenza zikagesi, ukuphepha kuhlala kuyinto ehamba phambili. Kungakho isokhethi yamanje engu-120A ifakwe izici zokuphepha ezithuthukisiwe ukuze kuqinisekiswe ukusebenza okuphephile. Ngezici ezifana nokuvikela ukugcwala kakhulu nezinto ezikwazi ukumelana nomlilo, ungaqiniseka ukuthi wena nezisetshenziswa zakho nivikeleke kahle. Sengiphetha, isokhethi yamanje ephezulu engu-120A enesixhumi esiyindilinga kanye nebha yebhasi yethusi iwushintsho lomdlalo embonini kagesi. Ukusebenza kwayo okukhethekile, ukwethembeka, ukuqina nezici zokuphepha kuyenza ibe ukukhetha okuhle kakhulu kunoma yiluphi uhlelo lokusebenza olusezingeni eliphezulu. Ungakuthwali ukulethwa kwamandla asezingeni eliphansi, thuthukela ku-120A ephezulu yamanje futhi uzwe umehluko wokulethwa kwamandla kunanini ngaphambili.