i got in touch with a gear specialist near buffer zone (namak bank), the person's name is ovais, he told me k gear khulne k baad hee pta chalayga k kya hosakta hai masla, he smelt the gear oil and he told me k clutch ki smell arahi hai oil se. the only reason i am confused about the whole situation is that some times the shifting is flawless, lagta hee nhi k koi masla hai aur kabhi kabhi gear slip krta hai...