Property agents expect larger executive condominium (EC) units to be a tough sell following the implementation of the 30 per cent Mortgage Servicing Ratio (MSR) on December 10. Seven executive condominium projects were launched for sale in 2013. They offer a total of 3,337 units, of which 2,337 have been sold as of December 10. Of the remaining units, agents say 48 per cent are larger 4- and...