MUMBAI, April 4 -- To correct a flaw in the ready reckoner (RR) rates, where slums, redeveloped slums and chawls have been paying on par with the plush high rises next door, the government has decided to embark on 'micro zoning' of areas in Mumbai. The decision was taken after the economic disparity in areas that stand cheek by jowl, particularly with the redevelopment overdrive in the city, came to the government's notice....