좀 딱딱한 토마토라 그런지 믹서기로 갈면 조금 갈리다가 헛돕니다 그럼 꺼서 믹서기를 들고 다시 흔들고 작동시키면 몇번갈리다가 다시 안되서 반복... 필립스제품인데 따로 눌러줄만한 무언가 들어있던것도 아니구요... 잘갈려면 어떻게 해야하나요?