Meri Janome 8200 machine hy, normally theek chal rai hy, lakin jahan par kapra thora mota ho jata hy vahan taap kerti hy aur dhaga tor deti hy, jaisy shalwar ka naifa bnaaty huey jahan jahan salai k uper sy guzaaro vahan problem kerti hy, taap ker k dhaga tor deti. Kaisy theek ker sakti hun please help ker dain.