Well My comment is not helpful to you but just wanted to share a small experience in this topic: I flew through Delhi once and recorded that The staffs were 100 times more corrupt then in the Nepali airport, Compare to India Nepal was more civilized and helpful and nice and was very impressed that the staffs at least not as bad as in India. Perhaps it is also because I myself am Nepali. And also that India is bigger then Nepal. So since my bad experince in Indian airport, I never travel through India.